std::flat_map<Key,T,Compare,KeyContainer,MappedContainer>::keys
From cppreference.com
const key_container_type& keys()constnoexcept; | (since C++23) | |
Return a constant reference to the adapted keys container. Equivalent to return c.keys;.
Contents |
[edit]Parameters
(none)
[edit]Return value
The underlying keys container.
[edit]Complexity
Constant.
[edit]Example
Run this code
#include <flat_map>#include <print>#include <type_traits>#include <vector> int main(){std::flat_map<int, double> adaptor{{1, 1.1}, {2, 2.2}, {3, 3.3}}; // The default keys container is std::vector: static_assert(std::is_same_v<decltype(adaptor.keys()), conststd::vector<int>&>); std::println("{}", adaptor.keys());}
Output:
[1, 2, 3]
[edit]See also
| direct access to the underlying values container (public member function) |
