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Make SmallVec::new const #263

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Rua opened this issue Jun 30, 2021 · 1 comment
Open

Make SmallVec::new const #263

Rua opened this issue Jun 30, 2021 · 1 comment

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@Rua
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Rua commented Jun 30, 2021

I don't know if this is possible, but it would definitely be helpful!
@mbrubeck mbrubeck mentioned this issue Jul 6, 2021
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@mbrubeck
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mbrubeck commented Jul 6, 2021

This should be easier to implement after #240 is complete. I have added this to our roadmap for smallvec 2.0 (#183).

TimLuq added a commit to TimLuq/rust-smallvec that referenced this issue Sep 24, 2021
@TimLuq
feat: servo#263 added feature const_new
69d0474
TimLuq added a commit to TimLuq/rust-smallvec that referenced this issue Sep 24, 2021
@TimLuq
feat: servo#263 added feature const_new
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@TimLuq TimLuq mentioned this issue Sep 24, 2021
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bors-servo added a commit that referenced this issue Sep 28, 2021
@bors-servo
Auto merge of #265 - TimLuq:const_new, r=mbrubeck
18b720f 
Added feature `const_new` which enables `SmallVec::new_const()`

As I wasn't alone in finding a use for having a `const` version of `new` (see #263) I decided to make a PR for it.

This adds a new feature flag `const_new` (nightly only) which exposes an alternative `new` function: `pub const unsafe fn new_const() -> SmallVec<A>`.

Nightly is needed for the binding `A: Array`, which could be worked around if the strict requirement is dropped from the `struct` declarations and moved only to the existing `impl`s.

If the maintainers wish for another solution for this I'll be happy to make a few more commits.
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