Re^3: Determing whether a regexp has capturing matches

Keep in mind that $#+ is -1 when the pattern does not match, regardless of whether there are captures.

"1234" =~ /(1)34/;
print $#+, "\n";
"1234" =~ /134/;
print $#+, "\n";
[download]

That prints "-1" both times, and -1 is considered a "true" value.

Comment on Re^3: Determing whether a regexp has capturing matches Select or Download Code

Replies are listed 'Best First'.
Re^4: Determing whether a regexp has capturing matches by adrianh (Chancellor) on Feb 27, 2007 at 16:45 UTC
Keep in mind that $#+ is -1 when the pattern does not match, regardless of whether there are captures. Good point. I was just thinking of my context where I'm guaranteed a successful match.	[reply]