Re^4: Where is $# fully documented?

> I shy away from that because, even though it is an assignable lvalue, it really is just an attribute of an array variable. So the doc could use a minor tweak.

That's my point, I couldn't mentally map this behavior to normal dereferencing mechanics cause it rather feels like a magic feature.

To make it more obvious, theoretically we could have a special syntax for keys and values of a hash ( like e.g. %<hash ).

This would be a similar beast (/me struggling for a name ;)

> In any case, $#$arrayref / $#{$arrayref}ought to be added to the examples there

Definitely!

Cheers Rolf

_{(addicted to the Perl Programming Language and ☆☆☆☆ :)}

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Re^5: Where is $# fully documented? by ikegami (Patriarch) on Sep 24, 2014 at 13:05 UTC
we could have a special syntax for keys and values of a hash ( like e.g. `%<hash` ). It couldn't be a variable since it's a list of values. It wouldn't make sense to give it the syntax of a variable since you couldn't do anything to it that you could do to a variable. Unless you mean `keys` in scalar context. That's an lvalue function that returns a magical variable like `substr`. As such, that could be made into a variable (e.g. `keys(%h) = 123;` could be made into `%#h = 123;`).	[reply] [d/l] [select]

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Re^5: Where is $# fully documented?
by ikegami (Patriarch) on Sep 24, 2014 at 13:05 UTC

we could have a special syntax for keys and values of a hash ( like e.g. %<hash ).

It couldn't be a variable since it's a list of values. It wouldn't make sense to give it the syntax of a variable since you couldn't do anything to it that you could do to a variable.

Unless you mean keys in scalar context. That's an lvalue function that returns a magical variable like substr. As such, that could be made into a variable (e.g. keys(%h) = 123; could be made into %#h = 123;).

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