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Matthias Krüger
daf4f34fe3
Reverse condition in Vec::retain_mut doctest I find that the doctest for `Vec::retain_mut` is easier to read and understand when the `if` block corresponds to the path that returns `true` and the `else` block returns `false`. Having the `if` block be the `false` path led me to stare at the example for somewhat longer than I probably had to.