When does the difference between a string and a number matter in Perl 5?

Posted by Chas. Owens on Stack Overflow See other posts from Stack Overflow or by Chas. Owens
Published on 2010-06-05T13:37:00Z Indexed on 2010/06/05 13:42 UTC
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perl

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string

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number

If a string in Perl 5 passes looks_like_number, it might as well be a number. For instance,

my $s = "10" + 5;

results in $s being assigned 15.

Are there any cases where a string does not behave like it's numeric equivalent would have?

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