Re^2: Regular expressions

Replies are listed 'Best First'.
Re^3: Regular expressions by stevieb (Canon) on Oct 27, 2015 at 17:02 UTC
As I said, the `?:` makes it so the group within the `()` is not captured. Observe... Without `?:`: `perl -E '"123" =~ /(2\|3)/; say $1' 2` [download] With `?:`: `perl -E '"123" =~ /(?:2\|3)/; say $1'` [download] Note how using the `?:` doesn't put anything into the special numbered `$1` variable. See perlretut's Non-Capturing Groupings	[reply] [d/l] [select]