Re: LangSpec: Statements and Blocks [first,last]

[Damian Conway]

iVAN wrote:

   > As we read in Damian Conway- Perl6-notes, there will be

"...may be..."

(Remember, I'm only the shambling henchman ;-)


   > a var-iterator that can be used to see how many times the cycle has
   > been "traversed" i.e.
   > 
   > foreach my $el (@ary) {
   >    .. do something ....
   >      print $#;  <--- print the index (or print $i )
   > }

Current thinking is that this functionality may be better provided by bestowing
it on a lexical via a property/trait:

        foreach my $el (@ary) {
                my $i: index;
                ...
                print $i;
        }

This seems preferable since it avoids reintroducing a punctuation variable and
allows nested loop counters to work consistently:

        foreach my $el (@ary) {
                my $i: index;
                for my $el2 (@ary2) {
                        my $j : index;
                        @table[$i][$j] = $el * $el2;
                }
        }


   > shall we have :
   > 
   > foreach my $el (@ary) {
   >      print $# if $#.first(); 
   >    .. do something ....
   >      print $# if $#.last();  
   > i.e. $#ary
   > };

I very much doubt it.

Damian