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Re: using basename on a list of filesnames

by roboticus (Chancellor)
on Nov 13, 2019 at 03:46 UTC ( #11108607=note: print w/replies, xml ) Need Help??


in reply to using basename on a list of filesnames

flieckster:

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:

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";

When run, it gives:

$ perl flp.pl d, liam, niapple

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.

...roboticus

When your only tool is a hammer, all problems look like your thumb.

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