On 12/12/2012 12:57 PM, Joseph Werner wrote:
On Wed, Dec 12, 2012 at 12:45 PM, Gareth Harper <spansh+lon...@gmail.com> wrote:
PBP and I disagree with you on this one, Gareth. When a sub does a
"return 0;" to a list context, that is interpreted as true. A bare
"return;" is best practice.
and i support that as well. the argument i get from the other side is
when calling foo() in a list context that needs a scalar like a hash value:
sub foo { ... return if $bad }
%bar = ( foo => foo() ) ; # fail
my counter answer is to use scalar there:
%bar = ( foo => scalar foo() ) ;
the win here is letting the caller decide on the context of the boolean
return. if you do a return undef (or 0 or '') then the caller can't ever
use the sub in a list context expecting an empty list, it always gets a
scalar. a plain return works in all contexts and lets the caller force a
scalar when needed.
uri
