std::flat_map<Key,T,Compare,KeyContainer,MappedContainer>::keys - cppreference.com
From cppreference.com
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(since C++23) | |
Return a constant reference to the adapted keys container. Equivalent to
return c.keys;.
Parameters
(none)
Return value
The underlying keys container.
Complexity
Constant.
Example
#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()), const std::vector<int>&>); std::println("{}", adaptor.keys()); }
Output:
See also
| direct access to the underlying values container (public member function) [edit] |