Re: Returned value from subroutine is 1 when returning ""

The empty string evaluates to false in a boolean context, so the first value stored in $o is the return value of the print.

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Re^2: Returned value from subroutine is 1 when returning "" by fidesachates (Monk) on Jan 06, 2011 at 16:21 UTC
Oh I understand now. I seem to have misunderstood the \|\|. I read the code as `(my $o = mysub()) \|\| print ...` I see now that the grouping is `my $o = (mysub() \|\| print ...` Thank you.	[reply] [d/l] [select]
Re^3: Returned value from subroutine is 1 when returning "" by Fletch (Bishop) on Jan 06, 2011 at 19:51 UTC
When in doubt about what exactly the precedence will be, B::Deparse is your friend. `$ perl -MO=Deparse,-b,-p -e 'my $o = mysub() \|\| print STDERR "WHY U NO + WORK\n";' (my $o = (mysub() \|\| print(STDERR "didnt work\n")));` [download] The cake is a lie. The cake is a lie. The cake is a lie.	[reply] [d/l]