Re: [FWP] Perl Card Games

[Rick Delaney <rick.delaney@home.com>]

Uri Guttman wrote:
> 
> >>>>> "JP" == John Porter <jdporter@min.net> writes:
> 
>   JP>         @a = (undef) x 5;  # any value; it will get overwritten.
>   JP>         for ( @a ) {
>   JP>           @$_ = (....);
>   JP>         }
> 
> i still don't get what you expect @$_ to be? explain it in english if
> you can. it looks like a symref.

It's not a symbolic reference.  Since each element in @a is undefined,
@$_ autovivifies an array and stores a reference to it in @a.

> and your comment about any value will be overwritten makes no sense
> either.

Yes.  It has to be undef, otherwise you are creating a symbolic
reference, and as long as x is being used it would be the same reference
stored in each element of @a.

-- 
Rick Delaney
rick.delaney@home.com

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