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Using the strtod and strtol methods from the POSIX module, you can convert the strings that Perl reads to numbers that you can operate on. It also suggests a nice "is_numeric" method:
# Begin quoting from <http://p3m.org/faq/C3/Q3.html> sub getnum { use POSIX qw(strtod); my $str = shift; $str =~ s/^\s+//; $str =~ s/\s+$//; $! = 0; my($num, $unparsed) = strtod($str); if (($str eq '') || ($unparsed != 0) || $!) { return undef; } else { return $num; } } sub is_numeric { defined getnum($_[0]) } # end quoting... sub comp { use POSIX qw(strtol); my ($a, $b) = @_; if (is_numeric($a) && is_numeric($b)) { return (strtol($a * 100) == strtol($b * 100)); } else { return ( $a eq $b ); } }

In reply to Re: Equality checking for strings AND numbers by shoness
in thread Equality checking for strings AND numbers by Anonymous Monk

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