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Makes the constructors of Duration const fns. #47300

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merged 3 commits into from
Jan 24, 2018
Merged

Makes the constructors of Duration const fns. #47300

merged 3 commits into from
Jan 24, 2018

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remexre
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@remexre remexre commented Jan 9, 2018

This affects Duration::new, Duration::from_secs, Duration::from_millis, Duration::from_micros, and Duration::from_nanos.

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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @aidanhs (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

@remexre remexre mentioned this pull request Jan 9, 2018
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oli-obk
oli-obk reviewed Jan 9, 2018
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src/libstd/time/duration.rs Outdated
@@ -73,7 +73,7 @@ impl Duration {
/// ```
#[stable(feature = "duration", since = "1.3.0")]
#[inline]
pub fn new(secs: u64, nanos: u32) -> Duration {
pub const fn new(secs: u64, nanos: u32) -> Duration {
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I don't think checked_add and expect are const fn yet and can't be made const fn yet

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Ugh, I'll remove new from the PR then.

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oli-obk commented Jan 9, 2018

It's not possible to have local variables in const fn yet. You'd need to convert everything to expression syntax.

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remexre commented Jan 9, 2018

Yeah, I committed the sin of PR'ing before the tests finished running locally... Should be fixed now?

shepmaster
shepmaster reviewed Jan 9, 2018
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src/libstd/time/duration.rs Outdated
pub const fn from_millis(millis: u64) -> Duration {
Duration {
secs: millis / MILLIS_PER_SEC,
nanos: ((millis % MILLIS_PER_SEC) as u32) * NANOS_PER_MILLI,
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You seem to have added literal tabs instead of 4 spaces.

@kennytm kennytm added T-libs-api Relevant to the library API team, which will review and decide on the PR/issue. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 10, 2018
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r? @sfackler

@Mark-Simulacrum Mark-Simulacrum assigned sfackler and unassigned aidanhs Jan 10, 2018
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These seem reasonable to me to become const fns.

@rfcbot fcp merge

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rfcbot commented Jan 10, 2018 •
edited by Kimundi
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Team member @sfackler has proposed to merge this. The next step is review by the rest of the tagged teams:

No concerns currently listed.

Once these reviewers reach consensus, this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

See this document for info about what commands tagged team members can give me.

@rfcbot rfcbot added the proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. label Jan 10, 2018
@alexcrichton alexcrichton mentioned this pull request Jan 16, 2018
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kennytm commented Jan 17, 2018

Triage ping, ticky boxes for you! @BurntSushi @Kimundi

@kennytm kennytm added S-waiting-on-team Status: Awaiting decision from the relevant subteam (see the T-<team> label). and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 17, 2018
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rfcbot commented Jan 23, 2018

🔔 This is now entering its final comment period, as per the review above. 🔔

@rfcbot rfcbot added final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. and removed proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. labels Jan 23, 2018
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rfcbot commented Jan 23, 2018

🔔 This is now entering its final comment period, as per the review above. 🔔

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@bors: r+

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bors commented Jan 23, 2018

📌 Commit c25178c has been approved by alexcrichton

@kennytm kennytm added the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label Jan 24, 2018
@kennytm kennytm removed the S-waiting-on-team Status: Awaiting decision from the relevant subteam (see the T-<team> label). label Jan 24, 2018
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bors commented Jan 24, 2018

⌛ Testing commit c25178c with merge a0dcecf...

bors added a commit that referenced this pull request Jan 24, 2018
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Auto merge of #47300 - remexre:duration-constructors-as-const-fns, r=…
a0dcecf 
…alexcrichton

Makes the constructors of Duration const fns.

This affects `Duration::new`, `Duration::from_secs`, `Duration::from_millis`, `Duration::from_micros`, and `Duration::from_nanos`.
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bors commented Jan 24, 2018

☀️ Test successful - status-appveyor, status-travis
Approved by: alexcrichton
Pushing a0dcecf to master...

@bors bors merged commit c25178c into rust-lang:master Jan 24, 2018
@WiSaGaN WiSaGaN mentioned this pull request Feb 28, 2018
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