On Fri, 22 Oct 2010 03:48:44 -0700 (PDT)
Marc von Bihl wrote:
> Hello, I am new to fucntional programming and have 2 questions:
>
> How can I apply a function to each element from a list and a second
> parameter?
>
> (def lstr '("Hello1" "Hello2" "Hello3"))
>
> (defn addtoString [s1 s2]
> (s
This should do it:
user=> (defn byte-array? [obj] (= Byte/TYPE (.getComponentType (class obj
#'user/byte-array?
user=> (byte-array? (byte-array [(byte 56) (byte 98)]))
true
user=> (byte-array? "")
false
user=> (byte-array? 99)
false
Hope that helps,
Dave
On Sat, Oct 23, 2010 at 11:53 PM, Sh
On Oct 24, 2:44 am, Chris Dow wrote:
> Is there any way to attach Clojure defined 'metadata' to to types? I
> am trying to write a ORM for records and would like some way to attach
> 'metadata' to types for the sake of mapping configuration. Clojure's
> built-in metadata apppears to be intende
Hi
Can anybody tell me how can I detect that a given object is a byte
array? Or maybe show me how to write a (defn byte-array? [obj] ..)
function? I want to be able to detect arrays of other types too - e.g.
char[], Integer[] etc.
I experimented a bit at the REPL:
user=> (type (byte-array [(byte
I started Emacs again and now your solution is working! I have no idea
why it did not work on the first restart but I am happy that I now can
import aliases from another namespace.
Thanks again for your help!
Stefan
On Oct 24, 10:00 am, Stefan Rohlfing
wrote:
> Hi Mikel,
>
> I tried your soluti
Hi Mikel,
I tried your solution but am still not able to import the aliases from
another namespace:
This is what I did:
-
src/active-record/tns.clj
(ns active-record.tns)
(require '[active-record.user :as user])
(require '[acti
you could do something like:
(map str ["hello1" "hello2" "hello3"] (repeat "world"))
there is also a time macro:
(time (println "oh hi"))
On Fri, Oct 22, 2010 at 5:48 AM, Marc von Bihl wrote:
> Hello, I am new to fucntional programming and have 2 questions:
>
> How can I apply a function to e
Is there any way to attach Clojure defined 'metadata' to to types? I
am trying to write a ORM for records and would like some way to attach
'metadata' to types for the sake of mapping configuration. Clojure's
built-in metadata apppears to be intended only for instances of
types. I could use Java
This is literally the way we "think"...but if we all verbalized it this
way... we would all have a stack overflow at runtime.
On Fri, Oct 22, 2010 at 11:56 AM, Ralph wrote:
> I have a Clojure program that I build as a JAR file using Maven.
> Embedded in the JAR Manifest is a build-version numb
Hello, I am new to fucntional programming and have 2 questions:
How can I apply a function to each element from a list and a second
parameter?
(def lstr '("Hello1" "Hello2" "Hello3"))
(defn addtoString [s1 s2]
(str s1 s2))
(apply (addtoString lstr "World"))
-
I need it for the follo
There's a pretty nice new chat feature at StackOverflow with the
ability to link responses to original messages and chat room
archiving. The Clojure room is at http://chat.stackoverflow.com/rooms/68/clojure
--
You received this message because you are subscribed to the Google
Groups "Clojure" gro
As opposed to other times in which DC metro traffic is any better?
That's actually what I'm braving Saturday evening as I'm leaving the
conference early to get to my high school reunion.
On Oct 18, 6:02 pm, Christopher Petrilli wrote:
> I'll be driving down from DC, and probably arriving betwee
What hackathon?
On Thu, Oct 21, 2010 at 12:00 AM, Alex Miller wrote:
> The Revelytix crew will be in around dinner time on Thursday. I'm
> happy to spring for food during the hackathon courtesy of Strange Loop
> or take a group out to dinner - whatever happens to be convenient.
>
> Alex Miller
Hi,
if you only dispatch on types you can do it like this:
(derive Object ::any)
; Also derive all of your ::keyword types from ::any.
(defmulti foo #(vec (map type %&)))
(defmethod foo [::any Integer] ...)
But this won't work if you dispatch on actual values as you did in
your example. For th
Hi,
I have a multimethod which is dispatched on two arguments:
(defmulti bar (fn [x y] [x y]))
(defmethod bar [1 2] ..)
(defmethod bar [3 4] ..)
Is there a way I can define methods on this which use "wildcards"?
E.g.:
; To match any call with 42 as the 1st argument
(defmethod bar [42 _] ..)
;
Hey!!! Maybe this is not the best place to ask this question, but
seeing as how many of you use emacs to code I will give it a shot.
I am using emacs, slime, swank combo. When I try to slime-connect, I
initially get the following error:
error in process filter: Symbol's value as variable is voi
+1 and a vote to also add these:
http://clojure.org/protocols
http://clojure.org/datatypes
On Sat, Oct 23, 2010 at 12:08, ka wrote:
> +1, besides adding transients, protocols 1.2 features, can we also
> have a "Future" section after the Reference section?
>
> --
> You received this message becaus
Huh! I checked several times to pass to recur replaced string, but
didn't noticed that I'm passing wrong string to .replace itself. Thank
you!
On Oct 23, 10:12 pm, Chris Perkins wrote:
> On Oct 23, 2:10 pm, andrei wrote:
>
> > I modified procedure a bit to see interim results, and it's output
>
On Oct 23, 2:10 pm, andrei wrote:
> I modified procedure a bit to see interim results, and it's output
> confused me even more.
>
> (defn replace-map
> "Replaces substrings in s from (keys m) by (vals m). "
> [s m]
> (loop [cur-str s, ks (keys m)]
> (if (empty? ks)
> cur-str
>
I modified procedure a bit to see interim results, and it's output
confused me even more.
(defn replace-map
"Replaces substrings in s from (keys m) by (vals m). "
[s m]
(loop [cur-str s, ks (keys m)]
(if (empty? ks)
cur-str
(let [replaced (.replace s (first ks) (m (first ks))
hi clojure-community,
yesterday i got my copy of martin fowlers "Domain Specific Languages".
I am quite sure, that this book, like others from the author, is an
important one to own for the "pragmatic bookshelf".
but reading the preface i found information that disappointed
me a little bit:
"..
- Why not make the jar available at compile time as well? (e.g. maven
scope="provided")
- You could also use a delay:
(def *version* (delay (get-version)))
and then write @*version* when you want the version information at runtime.
- Equivalently, you could memoize get-version and just call tha
Won't work. The "def" gets executed at compile time, before the JAR
file exists.
On Oct 22, 3:55 pm, ataggart wrote:
> (defn get-version []
> (-> (str "jar:" (-> my.ns.name (.getProtectionDomain)
> (.getCodeSource)
> (.getLocatio
Thanks for the great explanation. This really makes using the clj-
record library much more comfortable!
Stefan
PS. Sorry for replying late. I could not get my VPN to work which
meant Google Groups was blocked for me.
On Oct 21, 7:47 pm, Meikel Brandmeyer wrote:
> Hi,
>
> you can't transfer a
+1, besides adding transients, protocols 1.2 features, can we also
have a "Future" section after the Reference section?
--
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
25 matches
Mail list logo
