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Re^2: Subtracting Lists

by blazar (Canon)
on Jun 02, 2008 at 17:14 UTC ( #689718=note: print w/ replies, xml ) Need Help??

in reply to Re: Subtracting Lists
in thread Subtracting Lists

I personally believe that

@y = map { condition($_) ? $_ : () } @x;

is generally spelt

@y = grep { condition($_) } @x;

Of course, you have the condition reversed, but then a ! would do, and I doubt it would impose a considerable penalty in terms of efficience.

If you can't understand the incipit, then please check the IPB Campaign.

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