Re: Reset meaning of empty pattern?

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Re^2: Reset meaning of empty pattern? by LanX (Saint) on Sep 01, 2018 at 15:48 UTC
Can't test now, but probably this one has side effects by setting $1. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]
Re^3: Reset meaning of empty pattern? by tybalt89 (Monsignor) on Sep 01, 2018 at 16:45 UTC
That's why I posted the other ones. On the other hand, does it really matter? If the user does not expect $1 to be set by //, whether it has a value or is undef is irrelevant.	[reply]
Re^4: Reset meaning of empty pattern? by haukex (Archbishop) on Sep 01, 2018 at 16:52 UTC
On the other hand, does it really matter? It does to me, since I inspect the results of the regex, including @+ to see how many capture groups there were. `$ perl -wMstrict -le '""=~// or die; print for @+' 0 $ perl -wMstrict -le '""=~/(?:)/ or die; ""=~// or die; print for @+' 0 $ perl -wMstrict -le '""=~/()/ or die; ""=~// or die; print for @+' 0 0` [download] Updated examples.	[reply] [d/l]