738a41b363
BTreeMap: comment why drain_filter's size_hint is somewhat pessimistic The `size_hint` of the `DrainFilter` iterator doesn't adjust as you iterate. This hardly seems important to me, but there has been a comparable PR #64383 in the past. I guess a scenario is that you first iterate half the map manually and keep most of the key/value pairs in the map, and then tell the predicate to drain most of the key/value pairs and `.collect` the iterator over the remaining half of the map. I am totally ambivalent whether this is better or not. r? @Mark-Simulacrum |
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| alloc | ||
| backtrace@4083a90168 | ||
| core | ||
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| panic_unwind | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@3c3664355e | ||
| term | ||
| test | ||
| unwind | ||