1a7c203e7f
add Vec::push_within_capacity - fallible, does not allocate This method can serve several purposes. It * is fallible * guarantees that items in Vec aren't moved * allows loops that do `reserve` and `push` separately to avoid pulling in the allocation machinery a second time in the `push` part which should make things easier on the optimizer * eases the path towards `ArrayVec` a bit since - compared to `push()` - there are fewer questions around how it should be implemented I haven't named it `try_push` because that should probably occupy a middle ground that will still try to reserve and only return an error in the unlikely OOM case. resolves #84649 |
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| .. | ||
| alloc | ||
| backtrace@07872f28cd | ||
| core | ||
| panic_abort | ||
| panic_unwind | ||
| portable-simd | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@699c093a42 | ||
| test | ||
| unwind | ||