user=> (definline addsq [a b] `(+ (* ~a ~a) (* ~b ~b)))
#'hxr.clj.util/addsq
user=> (addsq (do (println "a evaluated") 1) 1)
a evaluated
a evaluated
2
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To
On Jul 29, 8:17 pm, Michael Wood wrote:
> 2009/7/29 mwillson :
> >
> > I was experimenting with Clojure and XML and stumbled upon a lengthy
> > hang when exiting java which was tracked down to the use of
> > clojure.contrib.lazy-xml. Here's a toy example which exhibits the
> > issue:
>
> I haven
Thank you Stuart and Daniel for the help. I think I have to step back
from the idea to use clojure on this Java 1.4 project :-(
Let's hope my next Java project addresses a less archaic Java version.
--~--~-~--~~~---~--~~
You received this message because you are s
On Jul 30, 1:29 am, John Harrop wrote:
> user=> (definline addsq [a b] `(+ (* ~a ~a) (* ~b ~b)))
> #'hxr.clj.util/addsq
> user=> (addsq (do (println "a evaluated") 1) 1)
> a evaluated
> a evaluated
> 2
You write the expansion, so you are in control of multiple evaluation.
Rich
--~--~-
On Thu, Jul 30, 2009 at 1:28 AM, John Harrop wrote:
> user=> (loop [i 0 j (double 1.0)]
> (if (= i 1) j (recur 1 (+ j j
> 2.0
> user=> (loop [i 0 j (double 1.0)]
> (if (= i 1) j (recur 1 (let [a j b j] (+ a b)
> # java.lang.IllegalArgumentException: recur arg for primitive local: j mus
On Jul 29, 6:09 pm, Jason Wolfe wrote:
> Is this a bug?
>
> user> (eval `(make-array ~Byte/TYPE 2))
> ; Evaluation aborted. (ExceptionInInitializerError)
>
> Compare:
>
> user> (eval `(make-array ~Byte 2))
> #
>
> user> (eval `(make-array Byte/TYPE 2))
> #
>
> user> (make-array (eval Byte/TYPE)
At my day job, we've always used a custom classloader to get around that
asymmetry.
-- Aaron
On Thu, Jul 30, 2009 at 9:51 AM, Rich Hickey wrote:
>
>
>
> On Jul 29, 6:09 pm, Jason Wolfe wrote:
> > Is this a bug?
> >
> > user> (eval `(make-array ~Byte/TYPE 2))
> > ; Evaluation aborted. (Exceptio
This is slightly unrelated, but...
How much work would it be to run the old code on a Java 5/6 VM? I
didn't get into Java until 5, so I'm not sure how much work is
actually involved w/ upgrading a JVM installation.
On Jul 30, 7:07 am, Frank Koenig wrote:
> Thank you Stuart and Daniel for the h
On Jul 30, 2009, at 6:51 AM, Rich Hickey wrote:
> On Jul 29, 6:09 pm, Jason Wolfe wrote:
>> Is this a bug?
>>
>> user> (eval `(make-array ~Byte/TYPE 2))
>> ; Evaluation aborted. (ExceptionInInitializerError)
>>
>> Compare:
>>
>> user> (eval `(make-array ~Byte 2))
>> #
>>
>> user> (eval `(make-ar
Hello,
I am not sure to agree.
If I get it right, definline is used to replace defn for function that
we want to be inlined.
So replacing defn by definline should have no impact on the semantic of
the program.
Best regards,
Nicolas.
On Thu, 2009-07-30 at 05:34 -0700, Rich Hickey wrote:
>
I'm gradually adding a few more Clojure benchmark programs to my
repository here:
git://github.com/jafingerhut/clojure-benchmarks.git
The one I wrote for the "reverse-complement" benchmark is here:
http://github.com/jafingerhut/clojure-benchmarks/blob/4ab4f41c6f963445e1e0973a668ac64939be1c7f/rc
On Thu, Jul 30, 2009 at 1:26 PM, Nicolas Oury wrote:
>
> Hello,
>
> I am not sure to agree.
>
> If I get it right, definline is used to replace defn for function that
> we want to be inlined.
>
> So replacing defn by definline should have no impact on the semantic of
> the program.
>
The docs for
BTW,
is definline still considered experimental (I know it is still mentioned in
the doc, just asking whether it's up to date or not) ?
2009/7/30 Stuart Halloway
>
> The documentation is explicit that definline observes defmacro-like
> semantics.
>
> A.K.A. "What Rich said" :-)
>
> Stu
>
> > He
I understand what's going on here (and I don't regard it as a bug that
needs fixing) but I thought I'd share something that caught me off-
guard, and perhaps should be mentioned in the docs for struct-maps.
Clojure 1.0.0-
user=> (defstruct foo :bar :baz)
#'user/foo
user=> (def foo-bar (accesso
The documentation is explicit that definline observes defmacro-like
semantics.
A.K.A. "What Rich said" :-)
Stu
> Hello,
>
> I am not sure to agree.
>
> If I get it right, definline is used to replace defn for function that
> we want to be inlined.
>
> So replacing defn by definline should hav
The problem is you aren't quoting the forms fed to eval.
This:
(eval (struct foo 1 2))
mean this:
(eval {:bar 1 :baz 2})
And small literal maps are eval'd as a PersistentArrayMap
Now if instead you do:
(eval '(struct foo 1 2))
then eval is eval'ing the form (struct foo 1 2), thus t
> The problem is you aren't quoting the forms fed to eval.
That was intentional. Imagine a broader example, where I want to read
in a form, examine/print/etc. parts of it, then evaluate it.
Printing a struct-map produces map syntax.
Reading the output produces a literal map with unevaluated c
On Thu, Jul 30, 2009 at 4:20 PM, Richard Newman wrote:
>
> The scenario here, though, is different: given an *existing* struct-
> map (which prints as {:foo 1 :bar 2} -- not a form), one cannot print
> it in such a way that the struct-map-ness is preserved when it is re-
> read. You can discover t
I'm trying to find an idiomatic way to read through a text file (e.g.
a Git history log) where an object will be represented by several
lines of text, and when we find a line that starts a new entry we
create the old entry and continue. For example here's my first clumsy
attempt. Can anybody advis
Hi,
I would suggest to have a look at fnparse[1]. It's
really cool. A commit-log parser might look like
this:
(def linebreak
(alt (conc (opt (lit \return)) (lit \newline))
(lit \return)))
(def hex-digit
(alt-lit-seq "0123456789abcdef"))
(def checksum
(semantics (rep+ hex-digit) #(
> Are you aware of *print-dup* ? It causes the printer to
> preserve more of the specific type information than normal
> printing:
It's one of those things that hasn't yet crept close enough on my
radar for me to absorb. This is the impetus...
> Having said that, it's important to note it doe
On 30 Jul 2009, at 2:26 PM, David Plumpton wrote:
> I'm trying to find an idiomatic way to read through a text file (e.g.
> a Git history log)
Sidenote: I'm hacking on this:
http://github.com/rnewman/clj-git/tree/master
I haven't got to commit messages etc. yet -- I'm primarily using git
as
On Thu, Jul 30, 2009 at 2:52 PM, Laurent PETIT wrote:
> BTW,
>
> is definline still considered experimental (I know it is still mentioned in
> the doc, just asking whether it's up to date or not) ?
>
Yes, still experimental.
Rich
> 2009/7/30 Stuart Halloway
>>
>> The documentation is explicit
On Jul 30, 5:03 pm, Chouser wrote:
> Are you aware of *print-dup* ? It causes the printer to
> preserve more of the specific type information than normal
> printing:
>
> user=> (binding [*print-dup* true] (prn (hash-map :a 1, :b 2)))
> {:a 1, :b 2}
> nil
> user=> (binding [*print-dup* true] (prn
What is this convention you are using with the -> ?
Are you coming from a C or C++ background or is this something lispy I
haven't seen before?
-- Aaron
On Thu, Jul 30, 2009 at 7:56 PM, Richard Newman wrote:
>
> On 30 Jul 2009, at 2:26 PM, David Plumpton wrote:
>
> > I'm trying to find an idio
> What is this convention you are using with the -> ?
>
> Are you coming from a C or C++ background or is this something lispy
> I haven't seen before?
A fair proportion of Common Lispers do that (though I've witnessed
debates about its merit, usually in the context of low-level code
where
It turns out that a framework we've been using is able to serialize
*any* Java class, whether it implements Serializable or not -- so,
we've been happily serializing keywords without them explicitly
supporting it for some time.
However, making Keyword formally Serializable has other benefits,
spe
On Jul 30, 2009, at 7:24 PM, Aaron Cohen wrote:
> Are you coming from a C or C++ background or is this something lispy
> I haven't seen before?
I first ran into this in Scheme, where I think its use is somewhat
more idiomatic than in CL. As the author observes, it's generally used
instead
28 matches
Mail list logo
