On Aug 7, 8:40 pm, Vagif Verdi vagif.ve...@gmail.com wrote:
I'd suggest to include into library for teaching purposes variants of
unoptimized functions with a suffix -naive. Say reduction-naive.
This way you could have both beautiful algorithm for teaching
purposes, and optimized function for
Hi Stuart,
2009/8/6 Stuart Halloway stuart.hallo...@gmail.com:
On the plus side, it appears to be faster (as collections grow large),
and it doesn't cheat by introducing an atom. On the minus side it
isn't as pretty as the one in contrib.
While maybe not as pretty as the one in contrib,
On Aug 7, 2009, at 2:59 AM, Lauri Pesonen wrote:
While maybe not as pretty as the one in contrib, it's not a monster
either. Shouldn't we aim for efficiency rather than elegance in
library routines (within reason)? I think the user will appreciate the
speedy version more than the pretty
I have to revise my last recommendation. The signature of the second
call should be
[f val coll]
in order to match reduce. Admittedly, this is a tiny detail.
Sean
On Aug 6, 4:28 pm, Sean Devlin francoisdev...@gmail.com wrote:
One more thought. I'd change the signature of the second call
I believe that if you're going for speed, another trick is to use
if-let to bind a name to (seq coll) and reuse the new name, rather
than coll, when applying first and rest later in the function.
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On Aug 7, 1:23 am, Daniel Lyons fus...@storytotell.org wrote:
This is the difference between FreeBSD and NetBSD. I agree, but I also
find it useful to crack open core and contrib to see coding examples
and to understand algorithms.
I'd suggest to include into library for teaching
Is the following an improvement on clojure.contrib.seq-utils/
reductions, or a step backwards?
(defn my-reductions
([f coll]
(if (seq coll)
(cons (first coll) (my-reductions f (first coll) (rest coll)))
(cons (f) nil)))
([f acc coll]
(if (seq coll)
(let
One more thought. I'd change the signature of the second call to
[f init coll]
This matches the original reductions.
On Aug 6, 4:20 pm, Sean Devlin francoisdev...@gmail.com wrote:
It seems to have the same signature, so as a consumer of the library
it's the same to me. If the speedup
