| Author |
Comment/Response |
Alvin
|
 03/24/06 04:20am
$src,$srcx,$list are all integers.
Length[$src] =100000
Length[$srcx]=100000
Length[$list]=5000
Pick[$src,MemberQ[$srcx,#]&/@$list];
Well, this takes almost a minute on P4 2.66G
So, I Dispatched some help...
Pick[$src, $srcx/.Dispatch[Thread[$list->True]]];
the timing goes down to 0.19 secs..
No questions here, just want to share with you guys who always deals with large lists.
Anyway, any idea how to make this even faster??
I definitely need it...
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