defaultmap
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A defaultmap for rust
I think it would be nice to have a method to return a clone of the default value.
The current implementation is quite inefficient, as it requires an allocation on each call. Criticism is welcome.
I have a use case where it would be convenient to insert the default value on a call to `get()` or on immutable index. For example, suppose you want to...
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The code would be ```rust /// A `HashMap` that returns a default when keys are accessed that are not present. #[derive(Clone, Debug)] #[cfg_attr(feature = "with-serde", derive(serde::Serialize, serde::Deserialize))] #[cfg_attr(feature = "serde-ignore-default",...