| Subclause | Header | ||
| Utility components | <utility> | ||
| Pairs | |||
| Tuples | <tuple> | ||
| Optional objects | <optional> | ||
| Variants | <variant> | ||
| Storage for any type | <any> | ||
| Expected objects | <expected> | ||
| Fixed-size sequences of bits | <bitset> | ||
| Function objects | <functional> | ||
| Type indexes | <typeindex> | ||
| Execution policies | <execution> | ||
| Primitive numeric conversions | <charconv> | ||
| Formatting | <format> | ||
| Bit manipulation | <bit> | ||
| Debugging | <debugging> |