in reply to Re(5): Toggling between two values
in thread Toggling between two values

Would you say that &bar is a closure?
Yes, it is, according to the standard definition.

OTOH, there needs to be a term for "subroutine which is created at run time via the sub operator and thus may have bindings to lexicals which outlive the names of those lexicals"...

The 6th Rule of Perl Club is -- There is no Rule #6.