On Tuesday, June 5, 2012 3:59:39 AM UTC+3, Kevin Lynagh wrote:
>
> Has anyone seen or implemented a CRUD application in Clojure using a
> database of immutable facts?
>
> For instance, a traditional database table supporting a todo-list
> application has columns
>
> user_id, task_id, task
:injections works! slime works too (with slime-describe-symbol for
doc). Thank you!
On Jun 4, 11:05 pm, Phil Hagelberg wrote:
> On Mon, Jun 4, 2012 at 5:55 PM, Warren Lynn wrote:
> > (use 'clojure.repl)
> > (use 'clojure.java.javadoc)
>
> > But now in the REPL I don't have clojure.repl namespace
On Mon, Jun 4, 2012 at 5:55 PM, Warren Lynn wrote:
> (use 'clojure.repl)
> (use 'clojure.java.javadoc)
>
> But now in the REPL I don't have clojure.repl namespace available
> anymore. Can anyone tell me why user.clj does not take effect anymore?
> Thank you.
Everything in clojure.repl has a nicer
Has anyone seen or implemented a CRUD application in Clojure using a
database of immutable facts?
For instance, a traditional database table supporting a todo-list
application has columns
user_id, task_id, task_description, is_done
A new row is created when a user adds a task.
Then that row
Hi,
I just started using lein version 2. Before (with lein 1.7), after
running "lein swank" and connect with "slime-connect" in emacs, in my
REPL i have clojure.repl included in "user" automatically namespace,
because I have a file user.clj under ~/.lein with the following
content:
(use 'clojure.
TL;DR: Interested in using core.logic for test data generation? I may have the
"stunted framework" [1] for you.
I've spent an entertaining few weeks learning core.logic and putting it into
practice. Because I learn by writing app-like code, I used it to generate
constrained hierarchica
On Jun 4, 2012, at 5:49 PM, Meikel Brandmeyer wrote:
>> Does anyone else think this is bad behavior, or should I ensure the map
>> isn't sorted before asking it if it contains a key?
>
> The problem is not asking the sorted-map for contained keys but the keys you
> use. You can't compare numbe
Hi,
Am 04.06.2012 um 23:36 schrieb Jay Fields:
> I have some code that checks for a key as part of a cond statement. If I use
> a map everything works fine, but if I ever pass in a sorted-map things fail.
> I boiled down the issue to this:
>
> user=> (contains? (sorted-map 1 2 3 4) :a)
> Class
I have some code that checks for a key as part of a cond statement. If I use a
map everything works fine, but if I ever pass in a sorted-map things fail. I
boiled down the issue to this:
user=> (contains? (sorted-map 1 2 3 4) :a)
ClassCastException java.lang.Long cannot be cast to clojure.lang.K
rossputin wrote:
> Has anyone hooked Postal up to SES ?
I tried it this morning and it works fine. I added a section to the
readme about it:
https://github.com/drewr/postal/commit/da8d89a54fad4f8c4e8c617d49c57dc8d8b44473
Open an issue if you find a problem. Thanks!
-Drew
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Any of a specialized distro, a shared VM, a pallet or vagrant script would
be a good idea, because the point of such an offering is for *getting
started*. For those who have never set up a Clojure environment, being able
to interact with an existing setup and take out the parts they want would
Jay's example has convinced me that redefinition is not a good idea anyway,
because #(f) is not always equivalent to f when (count [f]) is 1.
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Ugih,
> (into '(1 2 3) '(3 2 1)) => (1 2 3 1 2 3)
> (into [1 2 3] [3 2 1]) => [1 2 3 3 2 1]
When you `add` something to a vector it gets added to the end and when
you do the same with a list, it gets added to the front. It happens
that way because such behaviour is the most obvious for vectors
Ugih Li writes:
> (into '(1 2 3) '(3 2 1)) => (1 2 3 1 2 3)
> (into [1 2 3] [3 2 1]) => [1 2 3 3 2 1]
`into` conj[oins] the items of the second collection to the first
collection, and `conj` itself "adds" elements as it is most efficient
for the given collections. For list, conj prepends, for
Reader macros are syntactic sugar on top of the syntax.
They identify immediately what they stand for unambigously.
I doubt that it would be a good idea to introduce this kind of logic in the
reader.
That's an open door to chaos. The same token could be used for different
constructs.
As Meikel
(into '(1 2 3) '(3 2 1)) => (1 2 3 1 2 3)
(into [1 2 3] [3 2 1]) => [1 2 3 3 2 1]
(take-while even? [1 2 3 4]) => ()
?
anyone tell me why?
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; assume 'recorders' is {:x #(println (System/currentTimeMillis)) ... }
#((recorders %))
the above code has a single form (i.e. count 1), and allows you to get the
fn you desire from a map and immediately execute it.
I've done similar things in prod.
On Mon, Jun 4, 2012 at 8:51 AM, Steven Obua w
I doubt that this change would break anything, as the case that has changed has
been pretty useless so far.
On 4 Jun 2012, at 13:32, Moritz Ulrich wrote:
> I don't think redefining the behavior of fundamental syntax is a good
> idea. Might break many things.
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I don't think redefining the behavior of fundamental syntax is a good
idea. Might break many things.
On Mon, Jun 4, 2012 at 2:29 PM, Steven Obua wrote:
> Come to think of it, why not redefine #(...) in the following way:
>
>
> If (count [...]) is 0 or > 1 , then the old semantics stays
> If (coun
Come to think of it, why not redefine #(...) in the following way:
If (count [...]) is 0 or > 1 , then the old semantics stays
If (count [...]) is 1, then the new semantics kicks in (i.e., without
enclosing brackets).
This would allow (#({:a %}) :b) to behave in a sane way
In case f is actual
Or simply: #(vector 1 % 3)
Literals are not the only way to create data structures.
Kind regards
Meikel
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This one has caught me once or twice as well: #(xxx) evaluates "(xxx)", not
"xxx". My usual mistake is
... #([1 % 3]) ...
My rather verbose workround is
... #(identity [1 % 3]) ...
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If the OP is looking for an STM for mutable data. this one [1] is being used in
production in several sites for several years.
[1] http://web.ist.utl.pt/~joao.cachopo/jvstm/
On Jun 3, 2012, at 8:03 PM, Andy Fingerhut wrote:
> Technical-wise, since you asked specifically about the STM implement
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