in reply to How to enforce void context in Reply?

G'day docdurdee,

Using return without arguments would be how I would do this. The Syntax::Feature::Void documentation states this to be the functional equivalent of what it's doing. Is there a reason you can't do the same?

Please supply code examples of what you're doing, an explanation of how it's not achieving what you want at present, and a description of the actual result you're aimimg for. This clarification should help in providing a better answer.

-- Ken

  • Comment on Re: How to enforce void context in Reply?

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Re^2: How to enforce void context in Reply?
by AnomalousMonk (Archbishop) on May 19, 2015 at 02:27 UTC

    Further to kcott's reply above, here's an experiment that may make the operation of function call return context more clear: 

    c:\@Work\Perl\monks>perl -wMstrict -le
"sub S { print ! defined wantarray ? 'void' : wantarray ? 'list' : 'sc
+alar'; }
 ;;
 sub T {
   print 'non-return: ';
   S;
   print 'return: ';
   S;
   }
 ;;
 sub U {
   print 'SCALAR ----';
   my $scalar = T;
   print '';
   print 'LIST ----';
   my @ra = T;
   print '';
   print 'VOID ----';
   T;
   print '';
   }
 ;;
 U;
"
SCALAR ----
non-return:
void
return:
scalar

LIST ----
non-return:
void
return:
list

VOID ----
non-return:
void
return:
void

    [download]
    See also wantarray and Context in Perl.

    Give a man a fish:  <%-(-(-(-<

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