Re^2: grep for numbers

Why not to use this one?

my $num = $1 if ($str =~ /ci=(\d+)&/);
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Comment on Re^2: grep for numbers Download Code

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Re^3: grep for numbers by roboticus (Chancellor) on Mar 31, 2009 at 10:48 UTC
leonidlm: Because it's undefined behavior. It would be better to use: `my $num; $num = $1 if ($str =~ /ci=(\d+)&/);` [download] ...roboticus	[reply] [d/l]