atom and vector .. remove prolbem
sorry I can't write English.
watch my code.
(def room-list (*atom[]*))
(def rooms-1 {:key 12345 :create-dt 2013-11-22 :user-list[ {:name
name-1 :id id-1} {:name name-2 :id id-2}] })
(def rooms-2 {:key 67890 :create-dt 2013-12-52 :user-list[ {:name
name-3 :id id-3} {:name name-3 :id id-3}] })
(swap! room-list conj rooms-1)
(swap! room-list conj rooms-2)
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name name-1,
:id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [*{:name
name-3, :id id-3}* {:name name-3, :id id-3}]}]
I want remove red color text. ( red colore )
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name name-1,
:id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [{:name
name-3, :id id-3}] }]
I don't know how to remove...
dissoc,, pop, peek function can;t not solve.
please help me...
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Re: atom and vector .. remove prolbem
There are ways to achieve what you ask, but normally you wouldn't use
nested vectors for data structures you want to operate on associatively.
It will be inefficient, and the code will be ugly. Better to use more maps
and key them by:key and :id.
On Mon, Dec 9, 2013 at 12:46 AM, 박재혁 aquu...@gmail.com wrote:
sorry I can't write English.
watch my code.
(def room-list (*atom[]*))
(def rooms-1 {:key 12345 :create-dt 2013-11-22 :user-list[ {:name
name-1 :id id-1} {:name name-2 :id id-2}] })
(def rooms-2 {:key 67890 :create-dt 2013-12-52 :user-list[ {:name
name-3 :id id-3} {:name name-3 :id id-3}] })
(swap! room-list conj rooms-1)
(swap! room-list conj rooms-2)
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name
name-1, :id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [*{:name
name-3, :id id-3}* {:name name-3, :id id-3}]}]
I want remove red color text. ( red colore )
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name name-1,
:id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [{:name
name-3, :id id-3}] }]
I don't know how to remove...
dissoc,, pop, peek function can;t not solve.
please help me...
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Re: atom and vector .. remove prolbem
Hi,
You could try to do it like this...
Use a hashmap instead of a vector in the atom:
(def room-list (atom {}))
Insert rooms using a hashmap for the user-id's:
(swap! room-list assoc 67890 {:user-list {id-3 {:name name-3}}})
You can now find a user in a room like this:
(get-in @room-list [67890 :user-list id-3])
To remove a user from a room you can use:
(swap! room-list update-in [67890 :user-list] dissoc id-3)
Good luck!
On Monday, December 9, 2013 9:46:49 AM UTC+1, 박재혁 wrote:
sorry I can't write English.
watch my code.
(def room-list (*atom[]*))
(def rooms-1 {:key 12345 :create-dt 2013-11-22 :user-list[ {:name
name-1 :id id-1} {:name name-2 :id id-2}] })
(def rooms-2 {:key 67890 :create-dt 2013-12-52 :user-list[ {:name
name-3 :id id-3} {:name name-3 :id id-3}] })
(swap! room-list conj rooms-1)
(swap! room-list conj rooms-2)
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name
name-1, :id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [*{:name
name-3, :id id-3}* {:name name-3, :id id-3}]}]
I want remove red color text. ( red colore )
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name name-1,
:id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [{:name
name-3, :id id-3}] }]
I don't know how to remove...
dissoc,, pop, peek function can;t not solve.
please help me...
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Re: atom and vector .. remove prolbem
thank..
I change my source...
2013년 12월 9일 월요일 오후 6시 20분 34초 UTC+9, Walter van der Laan 님의 말:
Hi,
You could try to do it like this...
Use a hashmap instead of a vector in the atom:
(def room-list (atom {}))
Insert rooms using a hashmap for the user-id's:
(swap! room-list assoc 67890 {:user-list {id-3 {:name name-3}}})
You can now find a user in a room like this:
(get-in @room-list [67890 :user-list id-3])
To remove a user from a room you can use:
(swap! room-list update-in [67890 :user-list] dissoc id-3)
Good luck!
On Monday, December 9, 2013 9:46:49 AM UTC+1, 박재혁 wrote:
sorry I can't write English.
watch my code.
(def room-list (*atom[]*))
(def rooms-1 {:key 12345 :create-dt 2013-11-22 :user-list[ {:name
name-1 :id id-1} {:name name-2 :id id-2}] })
(def rooms-2 {:key 67890 :create-dt 2013-12-52 :user-list[ {:name
name-3 :id id-3} {:name name-3 :id id-3}] })
(swap! room-list conj rooms-1)
(swap! room-list conj rooms-2)
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name
name-1, :id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [*{:name
name-3, :id id-3}* {:name name-3, :id id-3}]}]
I want remove red color text. ( red colore )
@room-list
-- [{:key 12345, :create-dt 2013-11-22, :user-list [{:name
name-1, :id id-1} {:name name-2, :id id-2}]}
{:key 67890, :create-dt 2013-12-52, :user-list [{:name
name-3, :id id-3}] }]
I don't know how to remove...
dissoc,, pop, peek function can;t not solve.
please help me...
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Re: clojure java.jdbc db-do-prepared and dynamic parameters
I think the OP just meant to ask how to do a PreparedStatement batch update
in clojure.jdbc.
The simplest answer is, just give in multiple parameter vectors to
db-do-prepared
(sql/db-do-prepared db
INSERT INTO fruit2 ( name, appearance, cost, grade )
VALUES ( ?, ?, ?, ? )
[banana yellow 1 1.0]
[apple green 2 1.0]
[orange orange 3 1.0])
And as usual, if you have what should be separate parameters already in a
collection, use the apply function
(apply sql/db-do-prepared db
INSERT INTO fruit2 ( name, appearance, cost, grade ) VALUES ( ?, ?, ?, ?
)
[[banana yellow 1 1.0]
[apple green 2 1.0]
[orange orange 3 1.0]])
On Sunday, December 8, 2013 11:56:40 PM UTC+1, Sean Corfield wrote:
Do you want that specific piece of (procedural) Java converted to
Clojure or do you have a real use case in the context of a real
problem that you're trying to solve?
I suspect just showing you what that piece of Java would look like in
Clojure isn't going to teach you how to do this in general... and
there are multiple approaches that would each be more suitable to
particular real world problems.
Sean
On Sun, Dec 8, 2013 at 9:44 AM, Avinash Dongre
dongre@gmail.comjavascript:
wrote:
I see following example in Clojure.java.jdbc
(sql/db-do-prepared db INSERT INTO fruit2 ( name, appearance, cost,
grade )
VALUES ( ?, ?, ?, ? ) [test test 1 1.0])
But how do i convert following java code into clojure. I am new to
clojure
and not sure how to i pass multiple vector
final int numRows = 1;
PreparedStatement pstmt = conn
.prepareStatement(insert into new_order values (?, ?, ?));
for (int id = 1; id = numRows; id++) {
pstmt.setInt(1, id % 98);
pstmt.setInt(2, id % 98);
pstmt.setInt(3, id);
int count;
if ((count = pstmt.executeUpdate()) != 1) {
System.err.println(unexpected update count for a single insert
+
count);
System.exit(2);
}
if ((id % 500) == 0) {
System.out.println(Completed + id + inserts ...);
}
}
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An Architect's View -- http://corfield.org/
World Singles, LLC. -- http://worldsingles.com/
Perfection is the enemy of the good.
-- Gustave Flaubert, French realist novelist (1821-1880)
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error-on-reflection
I know about *warn-on-reflection* but is there anyway that I can get an error-on-reflection instead? I've been type hinting my application (50% done and yes it goes faster now), and it's a bit painful. What I would really want is to have a unit test which fails if reflection is used. So far, my best idea is catching standard-out and parsing it for reflection warnings. Not ideal. Phil -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: error-on-reflection
phillip.l...@newcastle.ac.uk (Phillip Lord) writes: I know about *warn-on-reflection* but is there anyway that I can get an error-on-reflection instead? I don't think so. I've been type hinting my application (50% done and yes it goes faster now), and it's a bit painful. What I would really want is to have a unit test which fails if reflection is used. So far, my best idea is catching standard-out and parsing it for reflection warnings. Not ideal. clojure/test/clojure/test_helper.clj already contains some helper macros for doing that, e.g., `should-not-reflect`: https://github.com/clojure/clojure/blob/0b73494c3c855e54b1da591eeb687f24f608f346/test/clojure/test_helper.clj#L126 One problem is, though, that you not only get reflection warnings for your own code but also for code in dependencies. So you need to tweak that macro with another regex that matches only reflection warnings in your own files. But then you should be able to do something like this: --8---cut here---start-8--- (ns myproject.test :require [clojure.test :as test]) (defmacro should-not-reflect ...) (test/deftest no-reflection-at-all (should-not-reflect (do (require 'myproject.ns1 :reload) (require 'myproject.ns2 :reload) ...))) --8---cut here---end---8--- HTH, Tassilo -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: error-on-reflection
Are you aware of `lein check`? We have our some of our CI builds wired to fail if that finds anything. On Dec 9, 2013 4:12 AM, Phillip Lord phillip.l...@newcastle.ac.uk wrote: I know about *warn-on-reflection* but is there anyway that I can get an error-on-reflection instead? I've been type hinting my application (50% done and yes it goes faster now), and it's a bit painful. What I would really want is to have a unit test which fails if reflection is used. So far, my best idea is catching standard-out and parsing it for reflection warnings. Not ideal. Phil -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
implementing arithmetic operators without using [+ - * / even? odd? inc dec]
Hi all, A very popular interview question is to try implement all arithemtic operations for integers without using all the usual suspects. After thinking for a while I concluded that I only really need inc/dec in order to implement everything else. And the good news is that one can easily implement inc/dec using bit-shifts like so: (ns interview.arithmetic (:refer-clojure :exclude [- * / + inc dec even? odd?])) (defn even? [x] (== 0 (bit-and x 1))) (defn odd? [x] (== 1 (bit-and x 1))) (defn- halve-int [x] (bit-shift-right x 1)) (defn- double-int [x] (bit-shift-left x 1)) (defn inc [x] (cond (even? x) (bit-xor x 1) (== -1 x) 0 :else (- x halve-int inc double-int))) (defn dec [x] (if (odd? x) (bit-xor x 1) (- x bit-not inc bit-not))) At this point, having this I can implement all arithmetic operations on integers by combining 'iterate' + take/take-while. For example here is +: (defn + ([] 0) ([x] x) ([x y] (let [iter (if (neg? y) dec inc)] (- x (iterate iter) (take (inc (Math/abs y))) last))) ([x y more] (reduce + x (cons y more The same pattern applies for [- * /]. My question is, can anyone see a better way of doing this? It seems pretty elegant to me but I'd like to see what other people think... many thanks :) Jim ps: division is indeed a bit trickier than the rest due to positive/negative signs. Not really hard though... -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: implementing arithmetic operators without using [+ - * / even? odd? inc dec]
If you limit your operations to positive integers, all you need are the three primitive operations inc, dec and zero?. Then you can build up the other operations pretty much as you did. However, bit shifts are far from the only way to build these three primitives. For example: (def zero? empty?) (def inc vector) (def dec first) Should work too, assuming you seed with an empty collection as a zero. I'm not guaranteeing any kind of perfomance or the ability to represent large numbers with this scheme and the current clojure implementation. On Monday, 9 December 2013, Jim - FooBar(); wrote: Hi all, A very popular interview question is to try implement all arithemtic operations for integers without using all the usual suspects. After thinking for a while I concluded that I only really need inc/dec in order to implement everything else. And the good news is that one can easily implement inc/dec using bit-shifts like so: (ns interview.arithmetic (:refer-clojure :exclude [- * / + inc dec even? odd?])) (defn even? [x] (== 0 (bit-and x 1))) (defn odd? [x] (== 1 (bit-and x 1))) (defn- halve-int [x] (bit-shift-right x 1)) (defn- double-int [x] (bit-shift-left x 1)) (defn inc [x] (cond (even? x) (bit-xor x 1) (== -1 x) 0 :else (- x halve-int inc double-int))) (defn dec [x] (if (odd? x) (bit-xor x 1) (- x bit-not inc bit-not))) At this point, having this I can implement all arithmetic operations on integers by combining 'iterate' + take/take-while. For example here is +: (defn + ([] 0) ([x] x) ([x y] (let [iter (if (neg? y) dec inc)] (- x (iterate iter) (take (inc (Math/abs y))) last))) ([x y more] (reduce + x (cons y more The same pattern applies for [- * /]. My question is, can anyone see a better way of doing this? It seems pretty elegant to me but I'd like to see what other people think... many thanks :) Jim ps: division is indeed a bit trickier than the rest due to positive/negative signs. Not really hard though... -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[Clojure-CLR] implement interface that has properties
I'm trying to implement an interface that has properties but can't quite seem to get it to work and I also have not found any relevant examples via Google (yet). I'm sure I'm doing something completely wrong here but have no idea how to fix it. (System.Reflection.Assembly/LoadWithPartialName System.Web) (defn foo-handler [] (reify System.Web.IHttpHandler (IsReusable [] false) (ProcessRequest [context] ( IsReusable is a property and I don't know how to tell reify that it is not a traditional function. CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: IsReusable Okay, I supply 'this' for IsReusable CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: IsReusable -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[ANN] Recursd - Functional Programming Conference in San Diego
Recursd http://recursd.com is a one day technical conference on functional programming. Join other programmers and enthusiasts Saturday January 18th, 2014, to take part in presentations and workshops about functional programming languages and applications. Recursd will be held in Central San Diego at the Ansir Innovation Center. Registrationhttps://www.eventbrite.com/e/recursd-a-functional-programming-conference-tickets-9601475271is $10 before Jan 4, 2014, and $20 after. Presenters receive free admission. To submit a proposal, contact us at: recu...@gmail.com Hope to see you there! Ron -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [Clojure-CLR] implement interface that has properties
If I recall, properties are just syntactic sugar for awkwardly named methods. Have you tried the compiler-generated get and set method-names? On Dec 9, 2013 9:50 AM, Frank Hale frankh...@gmail.com wrote: I'm trying to implement an interface that has properties but can't quite seem to get it to work and I also have not found any relevant examples via Google (yet). I'm sure I'm doing something completely wrong here but have no idea how to fix it. (System.Reflection.Assembly/LoadWithPartialName System.Web) (defn foo-handler [] (reify System.Web.IHttpHandler (IsReusable [] false) (ProcessRequest [context] ( IsReusable is a property and I don't know how to tell reify that it is not a traditional function. CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: IsReusable Okay, I supply 'this' for IsReusable CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: IsReusable -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [Clojure-CLR] implement interface that has properties
Hi John, Yes I've tried adding get_ to the property name but I'm still not doing something correctly. (defn foo-handler [] (reify System.Web.IHttpHandler (get_IsReusable [] false) (ProcessRequest [context] ( CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: get_IsReusable If I supply 'this' in the arg list for get_IsReusable I get another error (which is correct because get_IsReusable is a zero arg function): CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: get_IsReusable On Mon, Dec 9, 2013 at 12:15 PM, John D. Hume duelin.mark...@gmail.comwrote: If I recall, properties are just syntactic sugar for awkwardly named methods. Have you tried the compiler-generated get and set method-names? On Dec 9, 2013 9:50 AM, Frank Hale frankh...@gmail.com wrote: I'm trying to implement an interface that has properties but can't quite seem to get it to work and I also have not found any relevant examples via Google (yet). I'm sure I'm doing something completely wrong here but have no idea how to fix it. (System.Reflection.Assembly/LoadWithPartialName System.Web) (defn foo-handler [] (reify System.Web.IHttpHandler (IsReusable [] false) (ProcessRequest [context] ( IsReusable is a property and I don't know how to tell reify that it is not a traditional function. CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: IsReusable Okay, I supply 'this' for IsReusable CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: IsReusable -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [Clojure-CLR] implement interface that has properties
I also tried deftype (deftype foo-handler [] System.Web.IHttpHandler (get_IsReusable [this] false) (ProcessRequest [this context] ())) InvalidCastException Unable to cast object of type 'clojure.lang.Var' to type 'System.Type'. clojure.lang.Namespace.ReferenceClass On Mon, Dec 9, 2013 at 12:24 PM, Frank Hale frankh...@gmail.com wrote: Hi John, Yes I've tried adding get_ to the property name but I'm still not doing something correctly. (defn foo-handler [] (reify System.Web.IHttpHandler (get_IsReusable [] false) (ProcessRequest [context] ( CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: get_IsReusable If I supply 'this' in the arg list for get_IsReusable I get another error (which is correct because get_IsReusable is a zero arg function): CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: get_IsReusable On Mon, Dec 9, 2013 at 12:15 PM, John D. Hume duelin.mark...@gmail.comwrote: If I recall, properties are just syntactic sugar for awkwardly named methods. Have you tried the compiler-generated get and set method-names? On Dec 9, 2013 9:50 AM, Frank Hale frankh...@gmail.com wrote: I'm trying to implement an interface that has properties but can't quite seem to get it to work and I also have not found any relevant examples via Google (yet). I'm sure I'm doing something completely wrong here but have no idea how to fix it. (System.Reflection.Assembly/LoadWithPartialName System.Web) (defn foo-handler [] (reify System.Web.IHttpHandler (IsReusable [] false) (ProcessRequest [context] ( IsReusable is a property and I don't know how to tell reify that it is not a traditional function. CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: IsReusable Okay, I supply 'this' for IsReusable CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: IsReusable -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [Clojure-CLR] implement interface that has properties
It took me a few hours of research and trial and error but I think this will work: user= (def foo-handler (reify System.Web.IHttpHandler (get_IsReusable [this] false) (ProcessRequest [this context] ( #'user/foo-handler user= On Mon, Dec 9, 2013 at 12:38 PM, Frank Hale frankh...@gmail.com wrote: I also tried deftype (deftype foo-handler [] System.Web.IHttpHandler (get_IsReusable [this] false) (ProcessRequest [this context] ())) InvalidCastException Unable to cast object of type 'clojure.lang.Var' to type 'System.Type'. clojure.lang.Namespace.ReferenceClass On Mon, Dec 9, 2013 at 12:24 PM, Frank Hale frankh...@gmail.com wrote: Hi John, Yes I've tried adding get_ to the property name but I'm still not doing something correctly. (defn foo-handler [] (reify System.Web.IHttpHandler (get_IsReusable [] false) (ProcessRequest [context] ( CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: get_IsReusable If I supply 'this' in the arg list for get_IsReusable I get another error (which is correct because get_IsReusable is a zero arg function): CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: get_IsReusable On Mon, Dec 9, 2013 at 12:15 PM, John D. Hume duelin.mark...@gmail.comwrote: If I recall, properties are just syntactic sugar for awkwardly named methods. Have you tried the compiler-generated get and set method-names? On Dec 9, 2013 9:50 AM, Frank Hale frankh...@gmail.com wrote: I'm trying to implement an interface that has properties but can't quite seem to get it to work and I also have not found any relevant examples via Google (yet). I'm sure I'm doing something completely wrong here but have no idea how to fix it. (System.Reflection.Assembly/LoadWithPartialName System.Web) (defn foo-handler [] (reify System.Web.IHttpHandler (IsReusable [] false) (ProcessRequest [context] ( IsReusable is a property and I don't know how to tell reify that it is not a traditional function. CompilerException clojure.lang.CljCompiler.Ast.ParseException: Must supply at least one argument for 'this' in: IsReusable Okay, I supply 'this' for IsReusable CompilerException clojure.lang.CljCompiler.Ast.ParseException: Can't define method not in interfaces: IsReusable -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Moseley's FRP
Slightly OT, but I know many of you have read OOTTP. This paper describes a hypothetical relational modeling infrastructure that allows declaring indexes on and writing queries against denormalized tables as though they were normalized tables. The point of this is to eliminate the complexity that comes from demands of performance: algorithms become more brittle and harder to understand when they must be rewritten for a denormalized data structure, for example. But does this infrastructure exist in the real world? I'm aware of various efforts to provide relational modeling in the application, LINQ, datomic, etc. But I haven't seen much in the way of indexing support, or support for logical/physical schema separation. Is there some obvious way to do these? Indexing in particular is critical. Hierarchical modeling provides very fast look-up. Switching to a relational model without indexes would mean potentially scanning millions of rows for every data access. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[ANN] strucjure 0.4.0
Better late than never :) https://github.com/jamii/strucjure Strucjure is a library for describing stuff in an executable manner. It gives you pattern matching (with first-class patterns), validators, parsers, walks and lenses (and eventually generators). The shape of your data is immediately apparent from your code and errors are clearly reported. And the whole library is well under 500 loc. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [ANN] strucjure 0.4.0
Congrats, looks awesome -- looking forward to trying it out! -Jason On Monday, December 9, 2013 11:05:18 AM UTC-8, Jamie Brandon wrote: Better late than never :) https://github.com/jamii/strucjure Strucjure is a library for describing stuff in an executable manner. It gives you pattern matching (with first-class patterns), validators, parsers, walks and lenses (and eventually generators). The shape of your data is immediately apparent from your code and errors are clearly reported. And the whole library is well under 500 loc. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Moseley's FRP
Take a look at A practical theory of language-integrated query at http://homepages.inf.ed.ac.uk/wadler/topics/recent.html . In the FPDays talk linked there Wadler demonstrated writing queries which returned denormalised views on tables, composing those with queries on the denormalised view and compiling the result into efficient sql that acts over normalised tables. On 9 December 2013 17:56, Brian Craft craft.br...@gmail.com wrote: Slightly OT, but I know many of you have read OOTTP. This paper describes a hypothetical relational modeling infrastructure that allows declaring indexes on and writing queries against denormalized tables as though they were normalized tables. The point of this is to eliminate the complexity that comes from demands of performance: algorithms become more brittle and harder to understand when they must be rewritten for a denormalized data structure, for example. But does this infrastructure exist in the real world? I'm aware of various efforts to provide relational modeling in the application, LINQ, datomic, etc. But I haven't seen much in the way of indexing support, or support for logical/physical schema separation. Is there some obvious way to do these? Indexing in particular is critical. Hierarchical modeling provides very fast look-up. Switching to a relational model without indexes would mean potentially scanning millions of rows for every data access. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [ANN] Recursd - Functional Programming Conference in San Diego
Just registered! Thanks! Looking forward to it! !!! :) On Monday, December 9, 2013 8:04:05 AM UTC-8, Ron Toland wrote: Recursd http://recursd.com is a one day technical conference on functional programming. Join other programmers and enthusiasts Saturday January 18th, 2014, to take part in presentations and workshops about functional programming languages and applications. Recursd will be held in Central San Diego at the Ansir Innovation Center. Registrationhttps://www.eventbrite.com/e/recursd-a-functional-programming-conference-tickets-9601475271is $10 before Jan 4, 2014, and $20 after. Presenters receive free admission. To submit a proposal, contact us at: rec...@gmail.com javascript: Hope to see you there! Ron -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Help with Reduce
Hi I have the following function: (defn group [ validators] (fn [m] (reduce (fn [maps f] (let [[m error-m] maps [new-map errors] (f m)] [new-map (vec (flatten (if errors (conj error-m errors) error-m)))])) [m []] validators ))) The following call (def foo group) returns a function. All as I'd expect. I then thought I'd replace the anonymous function with a named function... (defn validate [maps f] (let [[m error-m] maps [new-map errors] (f m)] [new-map (vec (flatten (if errors (conj error-m errors) error-m)))])) (defn group2 [ validators] (fn [m] (reduce validate [m []] validators ))) The following call (def foo group2) returns an empty vector. I would have though it would have returned a function. Am I missing something? cheers Dave -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Help with Reduce
Hi Dave, I tried running your code. I did see a function being returned in both cases. Am I doing something different? Thanks Guru On Mon, Dec 9, 2013 at 12:09 PM, David Simmons shortlypor...@gmail.comwrote: Hi I have the following function: (defn group [ validators] (fn [m] (reduce (fn [maps f] (let [[m error-m] maps [new-map errors] (f m)] [new-map (vec (flatten (if errors (conj error-m errors) error-m)))])) [m []] validators ))) The following call (def foo group) returns a function. All as I'd expect. I then thought I'd replace the anonymous function with a named function... (defn validate [maps f] (let [[m error-m] maps [new-map errors] (f m)] [new-map (vec (flatten (if errors (conj error-m errors) error-m)))])) (defn group2 [ validators] (fn [m] (reduce validate [m []] validators ))) The following call (def foo group2) returns an empty vector. I would have though it would have returned a function. Am I missing something? cheers Dave -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Help with Reduce
Hi Guru odd. I'll give it another go. Kind Regards DAve -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Moseley's FRP
Very interesting paper, thanks. Seem to be more about LINQ to SQL, though: translating queries in a host language to sql queries against a db. It doesn't, for example, address indexing in-memory data. On Monday, December 9, 2013 11:23:36 AM UTC-8, Jamie Brandon wrote: Take a look at A practical theory of language-integrated query at http://homepages.inf.ed.ac.uk/wadler/topics/recent.html . In the FPDays talk linked there Wadler demonstrated writing queries which returned denormalised views on tables, composing those with queries on the denormalised view and compiling the result into efficient sql that acts over normalised tables. On 9 December 2013 17:56, Brian Craft craft...@gmail.com javascript:wrote: Slightly OT, but I know many of you have read OOTTP. This paper describes a hypothetical relational modeling infrastructure that allows declaring indexes on and writing queries against denormalized tables as though they were normalized tables. The point of this is to eliminate the complexity that comes from demands of performance: algorithms become more brittle and harder to understand when they must be rewritten for a denormalized data structure, for example. But does this infrastructure exist in the real world? I'm aware of various efforts to provide relational modeling in the application, LINQ, datomic, etc. But I haven't seen much in the way of indexing support, or support for logical/physical schema separation. Is there some obvious way to do these? Indexing in particular is critical. Hierarchical modeling provides very fast look-up. Switching to a relational model without indexes would mean potentially scanning millions of rows for every data access. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Help with Reduce
Hi Guru Ah my mistake, silly typo in my version. cheers Dave -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[ClojureCLR] clr.tools.nrepl
I'm attempting to run the CLR version of nREPL. I've cloned the code from: https://github.com/clojure/clr.tools.nrepl However, I'm not sure how to run the REPL. Doing lein run results in the following message: No :main namespace specified in project.clj. running lein compile doesn't fail but doesn't appear to do anything. running lein uberjar works but I can't run the resulting jar's because they don't have a main manifest attribute. running lein test results in the following message: Error: Could not find or load main class clojure.main Tests failed. There is little to no information on the usage or status of this package. Is this working yet? -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
TypeInitializationException
I grabbed the Clojure NuGet package 1.5.0.2, and when I new up my clojure
namespace and execute a method, I get a TypeInitializationException. It
seems to be referencing Clojure 1.4.0, but shouldn't it be targeting 1.5.0?
namespace.clj:
(ns my.namespace
(:gen-class
:methods [[testing [int] int]]))
(defn -testing [x] (* x 2))
Program.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var namespace = new my.namespace();
namespace.testing(2);
Console.ReadLine();
}
}
}
System.TypeInitializationException was unhandled
HResult=-2146233036
Message=The type initializer for 'my.namespace' threw an exception.
Source=log-analysis
TypeName=my.namespace
StackTrace:
at my.namespace..ctor()
at ConsoleApplication1.Program.Main(String[] args) in
c:\Users\jjelinek\Documents\Visual Studio
2012\Projects\log-analysis\ConsoleApplication1\Program.cs:line 13
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly,
String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence
assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.IO.FileLoadException
HResult=-2146234304
Message=Could not load file or assembly 'Clojure, Version=1.4.0.0,
Culture=neutral, PublicKeyToken=d0a477b1756ef34d' or one of its
dependencies. The located assembly's manifest definition does not match the
assembly reference. (Exception from HRESULT: 0x80131040)
Source=log-analysis
FileName=Clojure, Version=1.4.0.0, Culture=neutral,
PublicKeyToken=d0a477b1756ef34d
FusionLog Pre-bind state information ===
LOG: DisplayName = Clojure, Version=1.4.0.0, Culture=neutral,
PublicKeyToken=d0a477b1756ef34d
(Fully-specified)
LOG: Appbase = file:///C:/Users/jjelinek/documents/visual studio
2012/Projects/log-analysis/ConsoleApplication1/bin/Debug/
LOG: Initial PrivatePath = NULL
Calling assembly : log-analysis, Version=0.0.0.0, Culture=neutral,
PublicKeyToken=null.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file:
C:\Users\jjelinek\documents\visual studio
2012\Projects\log-analysis\ConsoleApplication1\bin\Debug\ConsoleApplication1.vshost.exe.Config
LOG: Using host configuration file:
LOG: Using machine configuration file from
C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Clojure, Version=1.4.0.0, Culture=neutral,
PublicKeyToken=d0a477b1756ef34d
LOG: Attempting download of new URL
file:///C:/Users/jjelinek/documents/visual studio
2012/Projects/log-analysis/ConsoleApplication1/bin/Debug/Clojure.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Minor Version
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing
terminated.
StackTrace:
at my.namespace..cctor()
InnerException:
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Re: Moseley's FRP
That part that seemed relevant to your question is compile queries on denormalised views to queries on normalised databases. On 9 December 2013 22:07, Brian Craft craft.br...@gmail.com wrote: Very interesting paper, thanks. Seem to be more about LINQ to SQL, though: translating queries in a host language to sql queries against a db. It doesn't, for example, address indexing in-memory data. On Monday, December 9, 2013 11:23:36 AM UTC-8, Jamie Brandon wrote: Take a look at A practical theory of language-integrated query at http://homepages.inf.ed.ac.uk/wadler/topics/recent.html . In the FPDays talk linked there Wadler demonstrated writing queries which returned denormalised views on tables, composing those with queries on the denormalised view and compiling the result into efficient sql that acts over normalised tables. On 9 December 2013 17:56, Brian Craft craft...@gmail.com wrote: Slightly OT, but I know many of you have read OOTTP. This paper describes a hypothetical relational modeling infrastructure that allows declaring indexes on and writing queries against denormalized tables as though they were normalized tables. The point of this is to eliminate the complexity that comes from demands of performance: algorithms become more brittle and harder to understand when they must be rewritten for a denormalized data structure, for example. But does this infrastructure exist in the real world? I'm aware of various efforts to provide relational modeling in the application, LINQ, datomic, etc. But I haven't seen much in the way of indexing support, or support for logical/physical schema separation. Is there some obvious way to do these? Indexing in particular is critical. Hierarchical modeling provides very fast look-up. Switching to a relational model without indexes would mean potentially scanning millions of rows for every data access. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Moseley's FRP
Both the denormalised view and the query on it are represented as LINQ queries. The compiler then optimises the composition of the two and returns something that acts directly on the database without building up an intermediate representation. It seems to me that the same technique should work for a normalised view over a denormalised database. On 10 December 2013 01:57, Jamie Brandon ja...@scattered-thoughts.netwrote: That part that seemed relevant to your question is compile queries on denormalised views to queries on normalised databases. On 9 December 2013 22:07, Brian Craft craft.br...@gmail.com wrote: Very interesting paper, thanks. Seem to be more about LINQ to SQL, though: translating queries in a host language to sql queries against a db. It doesn't, for example, address indexing in-memory data. On Monday, December 9, 2013 11:23:36 AM UTC-8, Jamie Brandon wrote: Take a look at A practical theory of language-integrated query at http://homepages.inf.ed.ac.uk/wadler/topics/recent.html . In the FPDays talk linked there Wadler demonstrated writing queries which returned denormalised views on tables, composing those with queries on the denormalised view and compiling the result into efficient sql that acts over normalised tables. On 9 December 2013 17:56, Brian Craft craft...@gmail.com wrote: Slightly OT, but I know many of you have read OOTTP. This paper describes a hypothetical relational modeling infrastructure that allows declaring indexes on and writing queries against denormalized tables as though they were normalized tables. The point of this is to eliminate the complexity that comes from demands of performance: algorithms become more brittle and harder to understand when they must be rewritten for a denormalized data structure, for example. But does this infrastructure exist in the real world? I'm aware of various efforts to provide relational modeling in the application, LINQ, datomic, etc. But I haven't seen much in the way of indexing support, or support for logical/physical schema separation. Is there some obvious way to do these? Indexing in particular is critical. Hierarchical modeling provides very fast look-up. Switching to a relational model without indexes would mean potentially scanning millions of rows for every data access. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Moseley's FRP
Ah yes, I see. Thanks! On Monday, December 9, 2013 6:00:19 PM UTC-8, Jamie Brandon wrote: Both the denormalised view and the query on it are represented as LINQ queries. The compiler then optimises the composition of the two and returns something that acts directly on the database without building up an intermediate representation. It seems to me that the same technique should work for a normalised view over a denormalised database. On 10 December 2013 01:57, Jamie Brandon ja...@scattered-thoughts.netjavascript: wrote: That part that seemed relevant to your question is compile queries on denormalised views to queries on normalised databases. On 9 December 2013 22:07, Brian Craft craft...@gmail.com javascript:wrote: Very interesting paper, thanks. Seem to be more about LINQ to SQL, though: translating queries in a host language to sql queries against a db. It doesn't, for example, address indexing in-memory data. On Monday, December 9, 2013 11:23:36 AM UTC-8, Jamie Brandon wrote: Take a look at A practical theory of language-integrated query at http://homepages.inf.ed.ac.uk/wadler/topics/recent.html . In the FPDays talk linked there Wadler demonstrated writing queries which returned denormalised views on tables, composing those with queries on the denormalised view and compiling the result into efficient sql that acts over normalised tables. On 9 December 2013 17:56, Brian Craft craft...@gmail.com wrote: Slightly OT, but I know many of you have read OOTTP. This paper describes a hypothetical relational modeling infrastructure that allows declaring indexes on and writing queries against denormalized tables as though they were normalized tables. The point of this is to eliminate the complexity that comes from demands of performance: algorithms become more brittle and harder to understand when they must be rewritten for a denormalized data structure, for example. But does this infrastructure exist in the real world? I'm aware of various efforts to provide relational modeling in the application, LINQ, datomic, etc. But I haven't seen much in the way of indexing support, or support for logical/physical schema separation. Is there some obvious way to do these? Indexing in particular is critical. Hierarchical modeling provides very fast look-up. Switching to a relational model without indexes would mean potentially scanning millions of rows for every data access. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Import dbpedia data into neo4j using clojure
Hi...
I have query regarding the clojure and neo4j..
I have started the program to load the dataset and also allocated 4G ram to
it.
But after processing around 272000 records, the process hangs and nothing
happens. If i try to stop the process then, and copy the data in neo4j
folder i get this error :
'neostore' does not contain a store version, please ensure that the
original database was shut down in a clean state.
Can you please advice what can be done on that and how should i proceed
further?
Many Thanks,
Kind Regards
Himakshi
On Sat, Dec 7, 2013 at 1:15 AM, Joseph Guhlin joseph.guh...@gmail.comwrote:
Glad it worked, if you have any further questions feel free to ask. I'm
using it extensively and it and Clojure seem to be a perfect match these
days, especially on very large datasets.
--Joseph
On Friday, December 6, 2013 12:56:40 AM UTC-6, Himakshi Mangal wrote:
Hi Joseph Guhlin,
Thanks your idea helped and i could send some sample data to my neo4j
database.
Thank you very much... :)
On Monday, December 2, 2013 3:41:53 PM UTC+5:30, Himakshi Mangal wrote:
Hi...
I am using clojure to import dbpedia data into neo4j.
Here's the code:
(ns opal.dbpedia
(:use [clojure.tools.logging :only [log]])
(:require [clojure.java.io :as io])
(:import [uk.ac.manchester.cs.owl.owlapi.turtle.parser TurtleParser]
[org.neo4j.unsafe.batchinsert BatchInserters]
[org.neo4j.graphdb DynamicRelationshipType]))
;; PARSING METHODS
(defn get-next-tuple
[parser]
(let [last-item (atom nil)
tuple (atom [])]
(while (and (not= . @last-item)
(not= @last-item))
(reset! last-item
(- parser
(.getNextToken)
(.toString)))
(swap! tuple conj @last-item))
(when-not (empty? (first @tuple)) ; .getNextToken returns once
you are out of data
@tuple)))
(defn seq-of-parser
[parser]
(if-let [next-tuple (get-next-tuple parser)]
(lazy-cat [next-tuple]
(seq-of-parser parser
(defn parse-file
[filename]
(seq-of-parser
(TurtleParser.
(io/input-stream filename
;; BATCH UPSERT METHODS
(def id-map (atom nil))
(defn insert-resource-node!
[inserter res]
(if-let [id (get @id-map res)]
; If the resource has aleady been added, just return the id.
id
; Otherwise, add the node for the node, and remember its id for
later.
(let [id (.createNode inserter {resource res})]
(swap! id-map #(assoc! % res id))
id)))
(defn connect-resource-nodes!
[inserter node1 node2 label]
(let [relationship (DynamicRelationshipType/withName label)]
(.createRelationship inserter node1 node2 relationship nil)))
(defn insert-tuple!
[inserter tuple]
; Get the resource and label names out of the tuple.
(let [[resource-1 label resource-2 _ ] tuple
; Upsert the resource nodes.
node-1 (insert-resource-node! inserter resource-1)
node-2 (insert-resource-node! inserter resource-2)]
; Connect the nodes with an edge.
(connect-resource-nodes! inserter node-1 node-2 label)))
(defn -main [graph-path files]
(let [inserter (BatchInserters/inserter graph-path)]
(doseq [file files]
(log :debug (str Loading file: file))
(let [c (atom 0)]
(doseq [tuple (parse-file file)]
(if (= (mod @c 1) 0)
(log :debug (str file : @c)))
(swap! c inc)
(insert-tuple! inserter tuple
(log :debug Loading complete.)
(log :debug Shutting down.)
(.shutdown inserter)
(log :debug Shutdown complete!)))
I am getting the following errors:
IllegalAccessError Transient used by non-owner thread clojure.lang.
PersistentArrayMap$TransientArrayMap.ensureEditable
(PersistentArrayMap.java:449)
IllegalArgumentException No matching method found: createNode for class
org.neo4j.unsafe.batchinsert.BatchInserterImpl clojure.lang.Reflector.
invokeMatchingMethod
Can anyone please help me in this.. Am doing something wrong or am i
missing something.. I am completely new to clojure. Is there a working
example for this?
Please help..
Thanks
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For
