Here's why - two regexps which return an array with the same result, but for different reasons

~$ perl -MData::Dumper -e 'print Dumper("1" =~ /1/)'
$VAR1 = 1;
~$ perl -MData::Dumper -e 'print Dumper("1" =~ /(1)/)'
$VAR1 = '1';

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In reply to Re^2: How can I test for the representation of an integer? by sm@sh
in thread How can I test for the representation of an integer? by sm@sh

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