--- Jeff Pinyan <[EMAIL PROTECTED]> wrote:
> On May 23, Peter Cline said:
> >Does anyone know a better way to say @{$$hash_name{arrayref}}?
>
> Doing $$foo{...} or $$foo[...] is often confusing for people to read.
> That's why the -> operator exists:
>
> $foo->{bar} # is like $$foo{bar}
> $foo->[$i] # is like $$foo[$i]
>
> So you could write:
>
> @{ $hash->{key} }
>
> Whitespace is your friend.
This is also one of the few good uses of local(), so long as you don't
let it confuse you: you can make localised aliases to complex names.
Just make sure you understand a local() var is a GLOBAL, and use it
with proper precaution.
{ local @ary = $hash_name->{arrayref}; # @ary now the array
print $ary[4]; # access is "normal"
} # aliasing ends with scope
Note that this is an *alias*, not a *copy*. @ary IS the array, same as
@{ $hash_name->{arrayref} } ... it's just that the anonymous array
referenced by $hash_name->{arrayref} has been given a local() name.
Think of it as a "nickname". =o)
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