Re^3: why need my in a foreach loop?

[ikegami]

the subroutine is a closure

Backwards. It works because the subroutine doesn't capture package variables. If you switched our for my in my snippet, you'd have a closure, and you'd get a different result.

[7stud]

Nice catch.

If you switched our for my in my snippet, you'd have a closure, and you'd get a different result.

Is that correct? Because the my variable would still be in scope, would the subroutine qualify as a closure? It's my understanding that a subroutine is a closure when it preserves a variable that has gone out of scope.

[ikegami]

I don't know the precise definition if there is one. For practical purposes, I find it doesn't matter.

Correction: In this case, the sub truly acts as a closure. If it didn't, it wouldn't matter if you used our or my.