Re^3: Where is $# fully documented?

Special function? No.

The a in @a is the identifier part of the variable name; the documentation addresses anywhere you'd put that a, which includes $#a.

Update: hmm, it does say "as part of a variable...name", implying it would only work if $#a is a considered a variable. 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.

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

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Re^4: Where is $# fully documented? by LanX (Saint) on Sep 24, 2014 at 09:43 UTC
> 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 ☆☆☆☆ :)}	[reply] [d/l] [select]
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]