<flat_map>: Various cleanups and bug fixes
#4468
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- Eliminate redundant parentheses.
- Use `it[-1]` instead of `*(it - 1)`.
- Add some `const`. Not yet to iterators due to moving.
- Eliminate most `if {/*...*/ return; } else {/*...*/}`, except when returning `end()`/`cend()` in `else`.
Also fix iterator dereferencing in insertion
- `lower_bound` - `upper_bound` - `lexicographical_compare_three_way`
- Inspect the return value of `erase_if` - Show different effects of insertion for different containers - Extract `conditional_t` - Test SCARY-ness for various containers (including `deque`)
StephanTLavavej
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bug
frederick-vs-ja
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Mar 11, 2024
StephanTLavavej
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Mar 13, 2024
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Thanks, this is great! I went ahead and merged this, with a few comments for followup. 😻 🥞 🗺️ |
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Towards #2910. Addresses review comments in #4337 and #4386.
Style cleanups:
it[-1]instead of*(it - 1).const. Not yet to iterators due to moving.if {/*...*/ return; } else {/*...*/}, except when returningend()/cend()inelse.Bug fixes:
distanceon non-forward input iterators.Drive-by consistency changes:
allocator<byte>conditionally present, which is consistent withpolymorphic_allocator. The behavior should be unchanged (modulo the existence ofbyte) when__cpp_lib_byteis not defined.Performance improvements:
_Hint_is_accurate._Key_equalafterlower_bound.lower_bound,upper_bound, andlexicographical_compare_three_way).Test changes:
erase_if.conditional_t.deque).