In article <[EMAIL PROTECTED]>,
Bart Lateur <[EMAIL PROTECTED]> writes:
> On Thu, 18 Apr 2002 12:42:17 -0500, c. church wrote:
>
>>$hash{foo}{bar}{baz} is extrmely descriptive. I
>>like it. I can look in once place and see exactly what I need.
>
> Yeah... but what I don't like, is that if I have an array (or list):
>
> @follow = ('foo', 'bar', 'baz');
>
> that I can't have a simple expression with \%hash and @follow which will
> look up the above expression or me. All I can do, is create a loop that
> follows each ref:
>
> my $ref = \%hash;
> foreach (@follow) {
> $ref = $ref->{$_};
> }
>
> and in the end, $ref will contain the value I want. Er, it will contain
> a *copy* of the value, I can't modify the original hash element using
> it.
>
> Complicated, or what?
>
Loop like this:
my $here = \\%hash;
$here = \${$here}->{$_} for @follow;
# Now you can really access that spot (even if it didn't exist before)
$$here = $value;
