std::chrono::operator<< (std::chrono::duration)

Since C++20

Header: <chrono>

Inserts a textual representation of d into os.

# Declarations

template<
class CharT,
class Traits,
class Rep,
class Period
> std::basic_ostream<CharT, Traits>&
operator<<( std::basic_ostream<CharT, Traits>& os,
const std::chrono::duration<Rep, Period>& d );

(since C++20)

# Return value

A reference to the stream, i.e., os.

# Example

#include <chrono>
#include <iostream>
using namespace std::chrono_literals;
 
int main()
{
    constexpr auto duration = 123ms;
    std::cout << duration << '\n';
}

# See also