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How do I perform an operation on a series of integers?by faq_monk (Initiate) |
on Oct 08, 1999 at 00:20 UTC ( [id://582]=perlfaq nodetype: print w/replies, xml ) | Need Help?? |
Current Perl documentation can be found at perldoc.perl.org. Here is our local, out-dated (pre-5.6) version: To call a function on each element in an array, and collect the results, use:
@results = map { my_func($_) } @array; For example:
@triple = map { 3 * $_ } @single; To call a function on each element of an array, but ignore the results:
foreach $iterator (@array) { &my_func($iterator); } To call a function on each integer in a (small) range, you can use:
@results = map { &my_func($_) } (5 .. 25);
but you should be aware that the
@results = (); for ($i=5; $i < 500_005; $i++) { push(@results, &my_func($i)); }
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