Re^2: Changing a returned hashref

Just to clarify for myself, I experimented a little and found that this clarified things a bit for me:

${$self->{HASH}}{1} = 'one';
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Re^3: Changing a returned hashref by Anonymous Monk on Nov 09, 2011 at 12:28 UTC
Then you'll like References quick reference	[reply]
Re^4: Changing a returned hashref by cqd (Initiate) on Nov 09, 2011 at 13:48 UTC
Thanks! What I found a bit confusing was how perl see the above hashref as a reference to another hashref instead of a reference to a hash with 2 keys...	[reply]
Re^5: Changing a returned hashref by aaron_baugher (Curate) on Nov 09, 2011 at 14:25 UTC
Yes, that can be confusing until you get used to it. The thing to keep in mind is that the values of a hash (or an array) can only be scalars. A scalar is always a single "thing": a number, a string, or a reference -- never a complex structure made of multiple things. So when we talk about something like, "a hash of hashes of arrays," that's really shorthand for, "a hash of references to hashes containing references to arrays." Aaron B. My Woefully Neglected Blog, where I occasionally mention Perl.	[reply]