Tracking issue for const Result
#67520
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A-const-fn
Area: const fn foo(..) {..}. Pure functions which can be applied at compile time.
C-tracking-issue
Category: A tracking issue for an RFC or an unstable feature.
Libs-Tracked
Libs issues that are tracked on the team's project board.
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Relevant to the library API team, which will review and decide on the PR/issue.
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jonas-schievink
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This was referenced Aug 30, 2020
bors
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Sep 20, 2020
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: rust-lang#67520). I believe these methods to be eligible for stabilization because of the stabilization of rust-lang#49146 (Allow if and match in constants) and the trivial implementations, see also: [PR#75463](rust-lang#75463) and [PR#76135](rust-lang#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: rust-lang#76225
flip1995
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Sep 24, 2020
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: rust-lang#67520). I believe these methods to be eligible for stabilization because of the stabilization of rust-lang#49146 (Allow if and match in constants) and the trivial implementations, see also: [PR#75463](rust-lang#75463) and [PR#76135](rust-lang#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: rust-lang#76225
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#76136 has been merged, this can be closed? |
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Feature
const_resultmakesis_ok(),is_err()andas_ref()const. AFAICS the other methods take ownership or can't be const as of now for other reasons.Part of PR #67494
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