rust/library/core
bors b873fa6d42 Auto merge of #76136 - CDirkx:const-result, r=dtolnay
Stabilize some Result methods as const

Stabilize the following methods of Result as const:
 - `is_ok`
 - `is_err`
 - `as_ref`

A test is also included, analogous to the test for `const_option`.

These methods are currently const under the unstable feature `const_result` (tracking issue: #67520).
I believe these methods to be eligible for stabilization because of the stabilization of #49146 (Allow if and match in constants) and the trivial implementations, see also: [PR#75463](https://github.com/rust-lang/rust/pull/75463) and [PR#76135](https://github.com/rust-lang/rust/pull/76135).

Note: these methods are the only methods currently under the `const_result` feature, thus this PR results in the removal of the feature.

Related: #76225
2020-09-20 13:07:11 +00:00
..
benches flt2dec: properly handle uninitialized memory 2020-09-02 12:41:38 +02:00
src Auto merge of #76136 - CDirkx:const-result, r=dtolnay 2020-09-20 13:07:11 +00:00
tests Auto merge of #76136 - CDirkx:const-result, r=dtolnay 2020-09-20 13:07:11 +00:00
Cargo.toml mv std libs to library/ 2020-07-27 19:51:13 -05:00