... if you don't want or need to keep your "dirty" array you could
modify it in-place ...
noviceuser: Note that because map aliases via $_ (on which
s/// operates by default), the dirty array is already being
modified in place:
Win8 Strawberry 5.8.9.5 (32) Wed 06/16/2021 10:11:33
C:\@Work\Perl\monks
>perl
use strict;
use warnings;
use Test::More tests => 2;
1..2
my @array1 = ('foo', 'bar');
my @array2 = (" foo\n", ',bar,');
my @clean = map { s/[\s,]//mg; $_ } @array2;
is_deeply \@clean, \@array1, "new, cleaned array";
is_deeply \@array2, \@array1, "dirty array modified in place";
^Z
ok 1 - new, cleaned array
ok 2 - dirty array modified in place
With Perl version 5.14 and after, one can use the
/r modifier
with
s/// (and
tr/// y///) to avoid this
modify-in-place behavior when operating on the default
$_
alias. See
s/// tr/// y///
under
Regexp Quote-Like Operators
in
perlop.
(Update: Correction: the tr/// y///
operators are actually discussed in the
Quote-Like Operators
section of perlop.)
Give a man a fish: <%-{-{-{-<
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