Pre-RFC: Take trait with impl for Default

[mbrubeck]

A similar proposal previously:

Method .take() on Vec

This is a nice pattern that takes the idea of Option::take and extends it to Vec. /// Replace the value with an "empty" state and return the original value trait Take { fn take(&mut self) -> Self; } impl<T> Take for Vec<T> { fn take(&mut self) -> Self { ::std::mem::replace(self, Vec::new()) } } This is nice because it allows writing code that replaces a vector with a map of it (playground) Edited to actually use ownership semantics, where this matters: A vec of Strings f…