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... 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 (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:  <%-{-{-{-<

In reply to Re^6: how to strip spaces, commas or new lines from an array by AnomalousMonk
in thread how to ignore spaces, commas or new line of an array when comparing by noviceuser

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