Comments on: Unnecessary function calls inside loops http://dev.enekoalonso.com/2008/11/28/unnecessary-function-calls-inside-loops/ having fun with code Thu, 15 Sep 2011 22:21:33 +0000 hourly 1 By: Eneko Alonso http://dev.enekoalonso.com/2008/11/28/unnecessary-function-calls-inside-loops/comment-page-1/#comment-12 Eneko Alonso Wed, 03 Dec 2008 18:20:03 +0000 http://dev.enekoalonso.com/?p=31#comment-12 Yes, I saw that one too. I agree. Do not rely on compilers. Do your best and they'll do their best :) Yes, I saw that one too. I agree. Do not rely on compilers. Do your best and they’ll do their best :)

]]> By: Pau Sánchez http://dev.enekoalonso.com/2008/11/28/unnecessary-function-calls-inside-loops/comment-page-1/#comment-11 Pau Sánchez Wed, 03 Dec 2008 16:59:33 +0000 http://dev.enekoalonso.com/?p=31#comment-11 Well, in fact oriented object languages use to have good implementations for "length" and similar functions (using a variable where length is stored, so once is computed, access is O(1)), no matter if they are interpreted or compiled. I'm impressed about your example on Safari, I though the implementation of string length would be good. About 'don't rely on compilers to optimize your programming faults', check this other article: <a href="http://www.codigomanso.com/2008/11/un-error-comun-en-programacion-lenguajes-compilados/" rel="nofollow">Un error comun en programacion: lenguages compilados</a> The conclusion for G++ is: the compiler is able to optimize strlen, but not other functions that could be optimized as well. So as you said, is not a good idea to rely or interpreters or compilers. Well, in fact oriented object languages use to have good implementations for “length” and similar functions (using a variable where length is stored, so once is computed, access is O(1)), no matter if they are interpreted or compiled.

I’m impressed about your example on Safari, I though the implementation of string length would be good.

About ‘don’t rely on compilers to optimize your programming faults’, check this other article:
Un error comun en programacion: lenguages compilados

The conclusion for G++ is: the compiler is able to optimize strlen, but not other functions that could be optimized as well.

So as you said, is not a good idea to rely or interpreters or compilers.

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