This is a good discussion because it brought out some subtle differences between our and globals declared without a scoping qualifier (and use vars ...) that I hadn't thought about. I've actually only been using 5.6 for a while now so our is a bit new to me.
Here's my question: I was looking at our
as a way to declare a global package variable and access that variable unqualified from its package while using strict
. But if our
also implies scoping where regular globals don't, are there other differences? The big question here would relate to global package variables accessed by other packages. I'm thinking of things like $VERSION
. Is there a difference declaring these with our
versus declaring them unqualified with an associated use vars
scoping rules seem to indicate that declaring these at the top of a file (compilation unit) limits their scope to that compilation unit. If so, what does that mean for variables accessed by other packages, like @ISA