Re: Loop controls

[Allison Randal]

On Mon, Apr 29, 2002 at 10:26:26AM -0400, Aaron Sherman wrote:
> On Fri, 2002-04-26 at 19:30, Miko O'Sullivan wrote:
> 
> > 1) Do we have a reality check on why this syntax is needed?
> 
> It's because the alternative is:
> 
> Perl5:
>       $did = 0;
>       for($i=0;$i<$max;$i++) {
>               ...
>       }
>       unless ($did) {
>               foreach (@x) {
>                       ...
>               }
>       }
> 
> Perl6:
> 
>       loop $i=0;$i<$max;$i++ {
>               ...
>               ELSE {
>                       for @x -> $_ {
>                               ...
>                       }
>               }
>       }
> 
> Proposed Perl6:
> 
>       loop $i=0;$i<$max;$i++ {
>               ...
>       } elsfor @x -> $_ {
>               ...
>       }

You left off possibility #4:

        loop $i=0;$i<$max;$i++ {
                ...
        } else {
                for @x -> $_ {
                        ...
                }
        }

At first glance I kind of like possibility #5:

>       loop $i=0;$i<$max;$i++ {
>               ...
>       } else for @x -> $_ {
>               ...
>       }

But you still have the added complexity of which keywords can be used
that way. And you've only saved two curly braces.

Allison