http://qs321.pair.com?node_id=1214838


in reply to Re: Distinguishing a filehandle for an in-memory string
in thread Distinguishing a filehandle for an in-memory string

I noticed this, but I saw somewhere in a comment or in some piece of documentation that it says something like "currently returns -1", which made me think that that is not a reliable way to check. But maybe it's as reliable as checking for "scalar" in the list of IO layers?