Comments on: interpolate hex color vectors in one line of ruby

By: crux

crux — Thu, 10 Jul 2008 14:51:56 +0000

@bob, what harsh words you spell on me? No, don't worry, nothing could be farther away from me than bringing awefull perl style to the ruby world. the interpol code just serves as the exception to the rule,

nichts fuer ungut

By: bob

bob — Thu, 10 Jul 2008 14:21:10 +0000

>>Sure, there must be a shorter version. Can you show it to me?

If short obfuscated code is your aim then I think your writing in the wrong language. Have you thought of perl

http://www.perlmonks.org/?node=Obfuscated%20Code

try not to bring this kind of crap to ruby

By: mono

mono — Wed, 27 Jun 2007 16:55:27 +0000

132 Zeichen im ersten Versuch. Einzeilig wäre etwas länger. Und Ruby ist es auch nicht. Aber mindestens so cryptisch.

h[]=[]::[Int] h l=read("0x"++(take 2 l)):h(drop 2 l) m a b=(a+b)div2 foldl(++)"".map(printf"%x")$zipWith m(h"ff00ff")(h"00ff00")

By: joe.sixpack

joe.sixpack — Wed, 27 Jun 2007 11:31:44 +0000

@it would not work for HSV, i knew that, but found colorspace to complicated for one line.

about active_support, that's also right, but would go against the 'fully self contained' character of this oneliner.

keep on going: ~~127~~121 == '%w{ff00ff 00ff00}.map{|a|a.scan(/../).map{|b|b.hex}}.inject{|c,d|c.size.times{|i|c[i]+=d[i]};c}.map{|e|"%0x"%(e>>1)}.join'.size

are to beat!

By: schmidt

schmidt — Wed, 27 Jun 2007 10:22:06 +0000

I could eliminate 5 chars by swapping "(0...c.size).each" with "c.size.times". One is redundant: "%02x" and "%0x" should be the same in this context. (e>>1) should never be larger than 255.

%w{ff00ff 00ff00}.map{|a|a.scan(/../).map{|b|b.hex}}.inject{|c,d|c.size.times{|i|c[i]+=d[i]};c}.map{|e|"%0x"%(e>>1)}.join

With the help of active support you could substitute ".map{|b|b.hex}" with ".map(&:hex)" and save again 3 characters.

And the final question is, wheter this algorithm is sufficient to calculate the colour "in the middle". I guess transforming it to HSV (the colour schema not the football club) and computing there would deliver better results. But this won't be shorter.