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Make some Option methods const #73930

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merged 1 commit into from
Jul 18, 2020
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a1phyr
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@a1phyr a1phyr commented Jul 1, 2020

Tracking issue: #67441

Constantify the following methods of Option:

  • as_ref
  • is_some
  • is_none
  • iter (not sure about this one, but it is possible, and will be useful when const traits are a thing)

cc @rust-lang/wg-const-eval @rust-lang/libs

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r? @joshtriplett

(rust_highfive has picked a reviewer for you, use r? to override)

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 1, 2020
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Reassigning to t-libs.
r? @dtolnay

@crlf0710 crlf0710 added the T-libs-api Relevant to the library API team, which will review and decide on the PR/issue. label Jul 17, 2020
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Thanks!

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dtolnay commented Jul 17, 2020

@bors r+

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bors commented Jul 17, 2020

📌 Commit e7d9944 has been approved by dtolnay

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 17, 2020
Manishearth added a commit to Manishearth/rust that referenced this pull request Jul 17, 2020
Make some Option methods const

Tracking issue: rust-lang#67441

Constantify the following methods of `Option`:
- `as_ref`
- `is_some`
- `is_none`
- `iter` (not sure about this one, but it is possible, and will be useful when const traits are a thing)

cc @rust-lang/wg-const-eval @rust-lang/libs
bors added a commit to rust-lang-ci/rust that referenced this pull request Jul 17, 2020
…arth

Rollup of 18 pull requests

Successful merges:

 - rust-lang#71670 (Enforce even more the code blocks attributes check through rustdoc)
 - rust-lang#73930 (Make some Option methods const)
 - rust-lang#74009 (Fix MinGW `run-make-fulldeps` tests)
 - rust-lang#74056 (Add Arguments::as_str().)
 - rust-lang#74169 (Stop processing unreachable blocks when solving dataflow)
 - rust-lang#74251 (Teach bootstrap about target files vs target triples)
 - rust-lang#74288 (Fix src/test/run-make/static-pie/test-aslr.rs)
 - rust-lang#74300 (Use intra-doc links in core::iter module)
 - rust-lang#74364 (add lazy normalization regression tests)
 - rust-lang#74368 (Add CSS tidy check)
 - rust-lang#74394 (Remove leftover from emscripten fastcomp support)
 - rust-lang#74411 (Don't assign `()` to `!` MIR locals)
 - rust-lang#74416 (Use an UTF-8 locale for the linker.)
 - rust-lang#74424 (Move hir::Place to librustc_middle/hir)
 - rust-lang#74428 (docs: better demonstrate that None values are skipped as many times a…)
 - rust-lang#74438 (warn about uninitialized multi-variant enums)
 - rust-lang#74440 (Fix Arc::as_ptr docs)
 - rust-lang#74452 (intra-doc links: resolve modules in the type namespace)

Failed merges:

r? @ghost
@bors bors merged commit f6cd31c into rust-lang:master Jul 18, 2020
yvt added a commit to r3-os/r3 that referenced this pull request Jul 28, 2020
These methods were added by [1] and are still unstable.

[1]: <rust-lang/rust#73930>
@a1phyr a1phyr deleted the feature_const_option branch March 12, 2024 17:14
@cuviper cuviper added this to the 1.47.0 milestone May 2, 2024
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7 participants