> Is that something like correct?
more or less, yes.
The tie() function binds a variable to a class (package) that will provide the implementation for access methods for that variable. Once this magic has been performed, accessing a tied variable automatically triggers method calls in the proper class. The complexity of the class is hidden behind magic methods calls.
see also perltie#Tying-Hashes
> I deliberately didn't refer to %fruit_color here as a hash
No it's for sure a "tied hash" in this case implementing a "hash". Both is correct.
Perl's generic term for associative arrays is "hash", no matter which implementation is used, so this is still a hash.
But a "tied hash" actually only refers to the %syntax and connected hash operators.
A tied hash may be used for any kind of magic, like e.g.
- making hash keys case insensitive $hash{key} eq $hash{KEY}
- returning the current time at different places $time{London}
- etc... see also Tie::Hash
But - besides providing a different implementations for hashes - it's in my experience mostly only used for syntactic sugar.
Most authors prefer providing an explicit OOP solution (like $time->get("London") ) and avoid the magic.
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