note
roboticus
<p>[flieckster]:</p>
<p>If you have a list of values and want to call a function on each of the values to make a new list, then you want to use map. I don't know where you're getting basename, so I just made a trivial example:</p>
<c>
use strict;
use warnings;
sub rm_first_3_chars {
my $name = shift;
return substr($name, 3);
}
my @list_of_names = ("Fred", "Billiam", "Wozniapple");
@list_of_names = map { rm_first_3_chars($_) } @list_of_names;
print join(", ", @list_of_names), "\n";
</c>
<p>When run, it gives:</p>
<c>
$ perl flp.pl
d, liam, niapple
</c>
<p>Essentially, you put the code you want to execute for each list item in the map block. In that block, $_ refers to each list item, and whatever the code returns is the new value that will be in the output list.</p>
<p>...[roboticus]</p>
<p><i>When your only tool is a hammer, all problems look like your thumb.</i></p>
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