That would just defer the issue.. fileOpen() doesn't return a boolean, so I can't go:
fileOpen() returns a file object; or nothing if it fails. The whole thing is to identify whether it's a file. That's the question.
As per my original, it's dead easy to work around, provided one leverages known side effects of the situation (original variable state; that if it's a file it exposes some public properties; that one can doa getClass() on it via Java, etc), but one shouldn't have to work around something as fundamental as this. So I was wondering if I had missed something.
Seemingly not (based on feedback I've had from various quarters).