MaybeUninit::copy/clone_from_slice

3 years ago

source link: https://github.com/rust-lang/rust/pull/79607
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Contributor

DrMeepster commented 28 days ago

This PR adds 2 new methods to MaybeUninit under the feature of maybe_uninit_write_slice: copy_from_slice and clone_from_slice.

These are useful for initializing uninitialized buffers (such as the one returned by Vec::spare_capacity_mut for example) with initialized data.

The methods behave similarly to the methods on slices, but the destination is uninitialized and they return the destination slice as an initialized slice.

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