Comments on: Digression into Swaps http://blog.moorejen.com/2007/05/digression-into-swaps/ Wer ist der Wasser? Wed, 07 Jan 2009 02:22:01 +0000 http://wordpress.org/?v=2.6.3 By: moeffju http://blog.moorejen.com/2007/05/digression-into-swaps/#comment-669 moeffju Wed, 11 Jul 2007 15:52:35 +0000 http://blog.moorejen.com/?p=60#comment-669 Am I ever glad to program in sane languages that can do swapping on one line, like Perl (but Python is much better). Am I ever glad to program in sane languages that can do swapping on one line, like Perl (but Python is much better).

]]> By: mfalcon24 http://blog.moorejen.com/2007/05/digression-into-swaps/#comment-567 mfalcon24 Wed, 06 Jun 2007 05:21:13 +0000 http://blog.moorejen.com/?p=60#comment-567 That is cool... not sure if C++ compilers would keep the optimization in however - if you really need to cut the extra variable out it might be best to do it in assembly. That is cool… not sure if C++ compilers would keep the optimization in however - if you really need to cut the extra variable out it might be best to do it in assembly.

]]> By: saintamh http://blog.moorejen.com/2007/05/digression-into-swaps/#comment-560 saintamh Sun, 03 Jun 2007 13:27:49 +0000 http://blog.moorejen.com/?p=60#comment-560 Oh, that's cool! This: ($a, $b) = ($b, $a); would also do the job (in Perl) and might be a bit more readable :) Oh, that’s cool! This:

($a, $b) = ($b, $a);

would also do the job (in Perl) and might be a bit more readable :)

]]> By: Michi http://blog.moorejen.com/2007/05/digression-into-swaps/#comment-423 Michi Wed, 09 May 2007 15:14:00 +0000 http://blog.moorejen.com/?p=60#comment-423 Neat, I can vaguely remember doing that once in a programming class two years ago. Now it will hopefully stay on my mind! Neat, I can vaguely remember doing that once in a programming class two years ago. Now it will hopefully stay on my mind!

]]> By: BunnyToaster http://blog.moorejen.com/2007/05/digression-into-swaps/#comment-419 BunnyToaster Tue, 08 May 2007 21:38:16 +0000 http://blog.moorejen.com/?p=60#comment-419 If you worry about arithmetic overflow, XOR comes to the rescue #include main() { int a =5; int b=7; a = a ^b; b = b ^a; a = a^ b; printf ("%d %d\n", a , b); } If you worry about arithmetic overflow, XOR comes to the rescue

#include

main() {
int a =5;
int b=7;

a = a ^b;
b = b ^a;
a = a^ b;

printf (”%d %d\n”, a , b);
}

]]> By: Lucello http://blog.moorejen.com/2007/05/digression-into-swaps/#comment-414 Lucello Tue, 08 May 2007 15:17:09 +0000 http://blog.moorejen.com/?p=60#comment-414 I should point out that this post arose from a pasta gratin, the baking of which required a swap of two pans to different racks in the oven. Many thanks to Jeremy for englightening us on this subject. <br /> :) I should point out that this post arose from a pasta gratin, the baking of which required a swap of two pans to different racks in the oven. Many thanks to Jeremy for englightening us on this subject.

:)

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