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.

--
A math joke: r = | |csc(θ)|+|sec(θ)| |-| |csc(θ)|-|sec(θ)| |

In reply to Re^3: Where is $# fully documented? by ysth
in thread Where is $# fully documented? by LanX

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