I do agree that caring for naming things right is very important, but, sometimes, specially in testing, you need a "wildcard" variable, an example, something that doesn't matter per se, that's when "foo" come into play.
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I do agree that caring for naming things right is very important, but, sometimes, specially in testing, you need a "wildcard" variable, an example, something that doesn't matter per se, that's when "foo" come into play.