Guillaume Gomez fcd75ccc90 Rollup merge of #116540 - daxpedda:once-cell-lock-try-insert, r=Mark-Simulacrum ...

Implement `OnceCell/Lock::try_insert()`

I took inspiration from [`once_cell`](https://crates.io/crates/once_cell):
- [`once_cell::unsync::OnceCell::try_insert()`](https://github.com/matklad/once_cell/blob/874f9373abd7feaf923a3b3c34bfb3383529c671/src/lib.rs#L551-L563)
- [`once_cell::sync::OnceCell::try_insert()`](https://github.com/matklad/once_cell/blob/874f9373abd7feaf923a3b3c34bfb3383529c671/src/lib.rs#L1080-L1087)

I tried to change as little code as possible in the first commit and applied some obvious optimizations in the second one.

ACP: https://github.com/rust-lang/libs-team/issues/276
Tracking issue: #116693

2023-10-14 22:35:05 +02:00

..

benches

mv std libs to library/

2020-07-27 19:51:13 -05:00

src

Rollup merge of #116540 - daxpedda:once-cell-lock-try-insert, r=Mark-Simulacrum

2023-10-14 22:35:05 +02:00

tests

Add data race test to std::env::{get, set}

2023-08-20 21:50:45 +02:00

build.rs

Revert "Invoke backtrace-rs buildscript in std buildscript"

2023-10-13 13:43:00 -06:00

Cargo.toml

Revert "Invoke backtrace-rs buildscript in std buildscript"

2023-10-13 13:43:00 -06:00