(C++17) | ||||
| Sequence | ||||
(C++11) | ||||
(C++26) | ||||
(C++26) | ||||
(C++11) | ||||
| Associative | ||||
| Unordered associative | ||||
(C++11) | ||||
(C++11) | ||||
(C++11) | ||||
(C++11) | ||||
| Adaptors | ||||
(C++23) | ||||
(C++23) | ||||
(C++23) | ||||
(C++23) | ||||
| Views | ||||
(C++20) | ||||
(C++23) | ||||
| Tables | ||||
| Iterator invalidation | ||||
| Member function table | ||||
| Non-member function table |
size_type max_size()constnoexcept; | (since C++23) | |
Returns the maximum number of elements the container is able to hold due to system or library implementation limitations. Equivalent tostd::min<size_type>(c.keys.max_size(), c.values.max_size()).
Contents |
(none)
Maximum number of elements.
Constant.
This value typically reflects the theoretical limit on the size of the container, at moststd::numeric_limits<difference_type>::max(). At runtime, the size of the container may be limited to a value smaller thanmax_size() by the amount of RAM available.
#include <iostream>#include <flat_map>#include <locale> int main(){std::flat_multimap<char,char> q;std::cout.imbue(std::locale("en_US.UTF-8"));std::cout<<"Maximum size of a std::flat_multimap is "<< q.max_size()<<'\n';}
Possible output:
Maximum size of a std::flat_multimap is 768,614,336,404,564,650
| returns the number of elements (public member function)[edit] |
