Re^4: Named Captures

[BrowserUk]

Okay. That begins to make sense ;)

But, I discovered that I can get (sort of) what I was after by switching to %-

perl -wE"()='abcde' =~ m[(?<a>a)|(?<b>b)|(?<c>c)|(?<d>d)|(?<e>e)]g and
+ do{ say for keys %- }"
e
c
a
b
d

[JavaFan]

Not quite.

() = 'abc' =~ /(?<a>a)|(?<f>f)/ and do {say for keys %-};
__END__
a
f

%- will have a key for every named capture in the pattern, whether that capture was involved in the match or not.

[BrowserUk]

Yes. Hence the "sort of". For my purpose, I just needed to ensure that lots of things got captured, I was never going to do anything with them. I was trying to heavily exercise both named captures and alternations in the hope of reproducing a memory leak.