This Clause describes utilities that are generally useful in C++ programs; some of these utilities are used by other elements of the C++ standard library. These utilities are summarized in Table 34.
| Subclause | Header(s) | |
| [utility] | Utility components | <utility> |
| [intseq] | Compile-time integer sequences | <utility> |
| [pairs] | Pairs | <utility> |
| [tuple] | Tuples | <tuple> |
| [optional] | Optional objects | <optional> |
| [variant] | Variants | <variant> |
| [any] | Storage for any type | <any> |
| [bitset] | Fixed-size sequences of bits | <bitset> |
| [memory] | Memory | <memory> |
| <cstdlib> | ||
| [smartptr] | Smart pointers | <memory> |
| [mem.res] | Memory resources | <memory_resource> |
| [allocator.adaptor] | Scoped allocators | <scoped_allocator> |
| [function.objects] | Function objects | <functional> |
| [meta] | Type traits | <type_traits> |
| [ratio] | Compile-time rational arithmetic | <ratio> |
| [time] | Time utilities | <chrono> |
| <ctime> | ||
| [type.index] | Type indexes | <typeindex> |
| [execpol] | Execution policies | <execution> |