Hi

I was experimenting with an enumerator function to iterate thru values and indices at the same time.

while this works (>5.10) 

sub enum (\@$$){
...
}
use feature 'state';
while ( enum @a => state $value, state $i ){
  print "enum: $i $value\n";
}

[download]

it's not possible to write

   while ( enum @a => state( $value, $i ) ){

without getting "a not enough arguments" error.

It's the same for my and our ...

So for what I can see this call tst(my($x,$y)) 

  DB<7> sub tst ($;$) {print scalar @_ }
 
  DB<8> tst(my($x,$y))
1

[download]

gets only one parameters passed! (UPDATED example)

So avoiding the syntax error by changing the prototype to make the third one optional - i.e.enum (\@$;$) {} - doesn't help.

That's a parsing error, or do I miss a special reason to handle it this way?

Cheers Rolf

UPDATE: OK I got it, my ($a,$b) seems to be handled like a shorthand for my ($a,$b)=(undef,undef) and therefore just the scalar value of a list assignment is returned.

In other words my returns the number of declared variables... 

  DB<3> sub tst  {print scalar @_ }<P>

  DB<4> tst( my ($a,$b))
2
  DB<5> tst( my ($a,$b,$c))
3
  DB<6> tst( my ($a,$b,$c,$d))
4

[download]

In reply to why doesn't "my ($a,$b)" return a list? by LanX

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