cd5a90fb14
BTree: lazily locate leaves in rangeless iterators BTree iterators always locate both the first and last leaf edge and often only need either one, i.e., whenever they are traversed in a single direction, like in for-loops and in the common use of `iter().next()` or `iter().next_back()` to retrieve the first or last key/value-pair (#62924). It's fairly easy to avoid because the iterators with this disadvantage already are quite separate from other iterators. r? `@Mark-Simulacrum` |
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alloc | ||
backtrace@221483ebaf | ||
core | ||
panic_abort | ||
panic_unwind | ||
proc_macro | ||
profiler_builtins | ||
rtstartup | ||
rustc-std-workspace-alloc | ||
rustc-std-workspace-core | ||
rustc-std-workspace-std | ||
std | ||
stdarch@3001c75a1d | ||
test | ||
unwind |