Henry Baragar Henry.Baragar-at-instantiated.ca |Perl 6| wrote:
> sub f2 (@y) {say @y.WHAT; say +...@y}; f2(Nil);
Array()
1
Why doesn't +...@y produce 0, not 1? It's an empty list.
From rakudo:
> sub f2 (@y) {say @y[0]}; f2(Nil);
Nil()
Henry
Uh, @y is an Array of one item, that one item being Nil.
I think the intent was to be an empty list. Nil is not supposed to go
into lists, but to become nothing when used in such a way. Wrapping Nil
into a list when it wasn't a list at all to begin with is totally
missing the point. And where did the wrapping Array come from? At its
simplest, Nil is an object whose Positional personality shows an empty
list, and that's what the @ variable uses.
--John
