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63 commits

Author SHA1 Message Date
Tyler Mandry
23a677787e
Rollup merge of #75026 - JulianKnodt:array_windows, r=Amanieu
Add array_windows fn

This mimicks the functionality added by array_chunks, and implements a const-generic form of
`windows`. It makes egregious use of `unsafe`, but by necessity because the array must be
re-interpreted as a slice of arrays, and unlike array_chunks this cannot be done by casting the
original array once, since each time the index is advanced it needs to move one element, not
`N`.

I'm planning on adding more tests, but this should be good enough as a premise for the functionality.
Notably: should there be more functions overwritten for the iterator implementation/in general?

~~I've marked the issue as #74985 as there is no corresponding exact issue for `array_windows`, but it's based of off `array_chunks`.~~

Edit: See Issue #75027 created by @lcnr for tracking issue

~~Do not merge until I add more tests, please.~~

r? @lcnr
2020-09-16 12:24:03 -07:00
kadmin
f240abc1dc Add array window fn
Updated issue to #75027

Update to rm oob access

And hopefully fix docs as well

Fixed naming conflict in test

Fix test which used 1-indexing

Nth starts from 0, woops

Fix a bunch of off by 1 errors

See https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=757b311987e3fae1ca47122969acda5a

Add even more off by 1 errors

And also write `next` and `next_back` in terms of `nth` and `nth_back`.

Run fmt

Fix forgetting to change fn name in test

add nth_back test & document unsafe

Remove as_ref().unwrap()
Documented occurrences of unsafe, noting what invariants are maintained
2020-09-16 14:52:20 +00:00
Christiaan Dirkx
8f27e3cb1b Make some methods of Pin unstable const
Make the following methods unstable const under the `const_pin` feature:
- `new`
- `new_unchecked`
- `into_inner`
- `into_inner_unchecked`
- `get_ref`
- `into_ref`

Also adds tests for these methods in a const context.

Tracking issue: #76654
2020-09-13 01:55:34 +02:00
Christiaan Dirkx
73e0a56dde Make all methods of Duration const
Make the following methods of `Duration` unstable const under `duration_const_2`:
 - `from_secs_f64`
 - `from_secs_f32`
 - `mul_f64`
 - `mul_f32`
 - `div_f64`
 - `div_f32`

This results in all methods of `Duration` being (unstable) const.

Also adds tests for these methods in a const context, moved the test to `library` as part of #76268.

Possible because of #72449, which made the relevant `f32` and `f64` methods const.

Tracking issue: #72440
2020-09-12 15:14:58 +02:00
marmeladema
b869aa5f31 Add saturating methods for Duration 2020-09-08 00:42:56 +01:00
Christiaan Dirkx
ce1d5ed31a Move const tests for Poll to library\core
Part of #76268
2020-09-04 01:04:34 +02:00
Lukas Kalbertodt
d7afe2a223
Fix tests using FixedSizeArray methods (which are now shadowed) 2020-08-30 21:08:18 +02:00
Scott McMurray
c20ad72323 Stabilize Range[Inclusive]::is_empty
I would like to propose these two simple methods for stabilization:
- Knowing that a range is exhaused isn't otherwise trivial
- Clippy would like to suggest them, but had to do extra work to disable that path <https://github.com/rust-lang/rust-clippy/issues/3807> because they're unstable
- These work on `PartialOrd`, consistently with now-stable `contains`, and are thus more general than iterator-based approaches that need `Step`
- They've been unchanged for some time, and have picked up uses in the compiler
- Stabilizing them doesn't block any future iterator-based is_empty plans, as the inherent ones are preferred in name resolution
2020-08-24 13:20:25 -07:00
kadmin
f6411e4c66 Add Array Impl Lang Item in various places
Add basic test

And also run fmt which is where the other changes are from

Fix mut issues

These only appear when running tests, so resolved by adding mut

Swap order of forget

Add pub and rm guard impl

Add explicit type to guard

Add safety note

Change guard type from T to S

It should never have been T, as it guards over [MaybeUninit<S>; N]
Also add feature to test
2020-08-13 03:50:57 +00:00
bors
19ecce332e Auto merge of #74948 - lzutao:stalize-result-as-deref, r=dtolnay
Stabilize `Result::as_deref` and `as_deref_mut`

FCP completed in https://github.com/rust-lang/rust/issues/50264#issuecomment-645681400.

This PR stabilizes two new APIs for `std::result::Result`:
```rust
fn as_deref(&self) -> Result<&T::Target, &E> where T: Deref;
fn as_deref_mut(&mut self) -> Result<&mut T::Target, &mut E> where T: DerefMut;
```

This PR also removes two rarely used unstable APIs from `Result`:
```rust
fn as_deref_err(&self) -> Result<&T, &E::Target> where E: Deref;
fn as_deref_mut_err(&mut self) -> Result<&mut T, &mut E::Target> where E: DerefMut;
```

Closes #50264
2020-08-02 23:55:12 +00:00
Lzu Tao
c25f25f7f1 Stabilize as_deref and as_deref on Result 2020-07-31 02:42:24 +00:00
Bastian Kauschke
d27007fd6d add tests for array_chunks 2020-07-30 10:50:34 +02:00
mark
2c31b45ae8 mv std libs to library/ 2020-07-27 19:51:13 -05:00
Renamed from src/libcore/tests/lib.rs (Browse further)