(Guildenstern) RE: Re: Can't access hash of hashes.

That was the trick! I just couldn't seem to find that information anywhere in Advanced Programming or in the Camel Book.
So, if I understand this correctly, I could use @{...} to force something to be evaluated in a list context? Very good piece of information - I've now added it to my Perl magnetic poetry in my cube so I can be sure to remember it.

Guildenstern
Negaterd character class uber alles!

Comment on (Guildenstern) RE: Re: Can't access hash of hashes. Download Code

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RE: (Guildenstern) RE: Re: Can't access hash of hashes. by merlyn (Sage) on Sep 07, 2000 at 18:51 UTC
Uh no. The term "hash context" was a casual term, and doesn't really fit anywhere in the formal lingo of the Perl documentors. For details about references, see perlref and perlreftut, and I've got a few columns online (or soon online) in my Linux Magazine Perl columns that back up the documentation with some nice walkthroughs. -- Randal L. Schwartz, Perl hacker	[reply]
(Guildenstern) RE: Can't access hash of hashes. by Guildenstern (Deacon) on Sep 07, 2000 at 19:01 UTC
Shoot. So you mean that if I have `my $a = \@b;`, `@{...}` is basically useless? I understand that `keys` expects a hash. Does `%{...}` create an anonymous hash reference out of whatever's in the braces? Guildenstern Negaterd character class uber alles!	[reply] [d/l] [select]
RE: (Guildenstern) RE: Can't access hash of hashes. by swiftone (Curate) on Sep 07, 2000 at 20:01 UTC
`$a=\@b;` [download] So $a is now a reference to a list. How do you access that list? `@$a` But of course, this kind of dereferencing can get confusing, easily typoed, etc. so you say: `@{$a}` It's all in perlref	[reply] [d/l] [select]
RE: (Guildenstern) RE: Can't access hash of hashes. by tye (Sage) on Sep 07, 2000 at 19:47 UTC
No, `@{$refToArray}` is the way to get the whole array when given a reference to an array. It just isn't called "forcing a list context". - tye (but my friends call me "Tye")	[reply] [d/l]