Okay, that's a different question and worth more thought.

I don't have a problem importing things into my namespace for three reasons:

• I keep my code fairly short, so I don't have to import many things.
• I tend to import only the things I really want, so the use line explicitly says what I want.
• When I bend my second point, I only do so with well-defined idioms, such as with the Test::* modules or something like File::Path.

I expect someone maintaining my code to be able to find the original location of functions I've imported. I try not to make it hard on that person, but I don't believe in writing un-idiomatic code because it's perceptually "self-documenting". Part of maintainability is readability and duplicate code hurts that.

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