size_type max_size() const; | (until C++11) | |
size_type max_size() const noexcept; | (since C++11) |
Returns the maximum number of elements the container is able to hold due to system or library implementation limitations, i.e. std::distance(begin(), end())
for the largest container.
(none).
Maximum number of elements.
Constant.
This value typically reflects the theoretical limit on the size of the container, at most std::numeric_limits<difference_type>::max()
. At runtime, the size of the container may be limited to a value smaller than max_size()
by the amount of RAM available.
#include <iostream> #include <vector> int main() { std::vector<char> s; std::cout << "Maximum size of a 'vector' is " << s.max_size() << "\n"; }
Possible output:
Maximum size of a 'vector' is 9223372036854775807
returns the number of elements (public member function) |
|
returns the number of elements that can be held in currently allocated storage (public member function) |
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