Hello nysus,

Since you’re testing for equality only, the straightforward solution is to stringify both terms in the comparison, thereby guaranteeing that you always compare a string with a string:

#! perl
use strict;
use warnings;
use Data::Dump;

my  $string_or_number   =   123;
my  @strings_or_numbers = ('abc', 123, 'ab4', 456);
my  @filtered = grep { "$string_or_number" ne "$_" } @strings_or_numbe
+rs;
dd \@filtered;

[download]

Output:

 1:37 >perl 1612_SoPW.pl
["abc", "ab4", 456]

 1:37 >

[download]

Of course, this assumes that neither $string_or_number nor any of the elements of @strings_or_numbers are ever undef.

Update: As AnomalousMonk and Laurent_R have pointed out below, the stringwise equality operators eq and ne implicity stringify their operands, so grep { "$string_or_number" ne "$_" } can be simplified to grep { $string_or_number ne $_ }.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Filtering array of strings and numbers by Athanasius
in thread Filtering array of strings and numbers by nysus

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