http://www.perlmonks.org?node_id=670657


in reply to Code style advice: where to put "use" statements?

I was going to suggest that maybe the following pattern might be stylistically sound:
sub something { use Foo; # ... no Foo; }
I was reminded of this by both lexical pragmata like strict, and Moose which advocates that in its code samples.

The module in question would need to have a functioning unimport implementation, and a quick test with Exporter showed me that Exporter doesn't give you that for free, so it's probably not usually the case that no Foo would work at all.

However, even if Foo had implemented unimport, I doubt it'd work inside subs. And I'm afraid I'm not fascinated enough to investigate further (because I don't see much practical value). I'll just agree with the general sentiment that use clauses preferably go near the top of the file.