On Oct 22, 3:22 pm, John Harrop jharrop...@gmail.com wrote:
user= (map call (map constantly [1 2 3]))
(1 2 3)
map call and map constantly are actually inverse operations.
:) that makes me smile!
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(apply arg)
On Oct 21, 7:49 pm, samppi rbysam...@gmail.com wrote:
Is there a standard function that takes one argument and calls it?
That is, the function equivalent to #(%). Or is that the best idiom
there is?
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That is indeed nice. Thanks for the code; I guess I don't really have
to settle for #(%) after all.
@RandyHudson: apply would work, but it's pretty slow, and not worth
switching from #(%).
On Oct 21, 11:49 pm, Timothy Pratley timothyprat...@gmail.com wrote:
On Oct 22, 3:22 pm, John Harrop
apply
On Oct 22, 12:49 am, samppi rbysam...@gmail.com wrote:
Is there a standard function that takes one argument and calls it?
That is, the function equivalent to #(%). Or is that the best idiom
there is?
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Ah, of course. But then I'm afraid of a time penalty cost, because
apply can take many arguments; would this be significant? Or should I
stick to #(%)?
Clojure 1.0.0-
user= (def a (constantly 55))
#'user/a
user= (time (dotimes [_ 500] (a)))
Elapsed time: 0.389 msecs
nil
user= (time (dotimes [_
I think you need to be careful not to prematurely optimise. If using
apply becomes a problem, then drop in something more efficient, but
until that point there's no reason not to use it.
- James
On Oct 22, 1:27 am, samppi rbysam...@gmail.com wrote:
Ah, of course. But then I'm afraid of a time
On Wed, Oct 21, 2009 at 7:49 PM, samppi rbysam...@gmail.com wrote:
Is there a standard function that takes one argument and calls it?
That is, the function equivalent to #(%). Or is that the best idiom
there is?
#(%) is only four characters. Calling apply with only one argument also does
Oh, no. I was just wondering if there was a standard variable devoted
to it. A symbol would be aesthetically less clutter than #(%), even if
it'd take more typing. But if there isn't any other than the slow
apply function, I'm happy with #(%) too. :)
On Oct 21, 6:33 pm, John Harrop
On Wed, Oct 21, 2009 at 11:50 PM, samppi rbysam...@gmail.com wrote:
Oh, no. I was just wondering if there was a standard variable devoted
to it. A symbol would be aesthetically less clutter than #(%), even if
it'd take more typing. But if there isn't any other than the slow
apply function,
On Thu, Oct 22, 2009 at 12:19 AM, John Harrop jharrop...@gmail.com wrote:
On Wed, Oct 21, 2009 at 11:50 PM, samppi rbysam...@gmail.com wrote:
Oh, no. I was just wondering if there was a standard variable devoted
to it. A symbol would be aesthetically less clutter than #(%), even if
it'd take
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