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std::seed_seq::size

std::size_t size() const noexcept;
(since C++11)

Returns the size of the underlying seed sequence.

Return value

v .size()

Complexity

Constant time.

Example

#include <iostream>
#include <random>

int main()
{
    std::seed_seq s1 = {-1, 0, 1};
    std::cout << s1.size() << '\n';
}

Output:

3

Defect report

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 2440 C++11 seed_seq::size was not noexcept made noexcept

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Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/cpp/numeric/random/seed_seq/size

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