std::literals::chrono_literals Namespace Reference

Functions
template<char... _Digits>
constexpr chrono::hours	operator""h ()
constexpr chrono::duration< long double, ratio< 3600, 1 > >	operator""h (long double __hours)
template<char... _Digits>
constexpr chrono::minutes	operator""min ()
constexpr chrono::duration< long double, ratio< 60, 1 > >	operator""min (long double __mins)
template<char... _Digits>
constexpr chrono::milliseconds	operator""ms ()
constexpr chrono::duration< long double, milli >	operator""ms (long double __msecs)
template<char... _Digits>
constexpr chrono::nanoseconds	operator""ns ()
constexpr chrono::duration< long double, nano >	operator""ns (long double __nsecs)
template<char... _Digits>
constexpr chrono::seconds	operator""s ()
constexpr chrono::duration< long double >	operator""s (long double __secs)
template<char... _Digits>
constexpr chrono::microseconds	operator""us ()
constexpr chrono::duration< long double, micro >	operator""us (long double __usecs)

Detailed Description

ISO C++ 2014 namespace for suffixes for duration literals.

These suffixes can be used to create chrono::duration values with tick periods of hours, minutes, seconds, milliseconds, microseconds or nanoseconds. For example, std::chrono::seconds(5) can be written as 5s after making the suffix visible in the current scope. The suffixes can be made visible by a using-directive or using-declaration such as:

• using namespace std::chrono_literals;
• using namespace std::literals;
• using namespace std::chrono;
• using namespace std;
• using std::chrono_literals::operator""s;

The result of these suffixes on an integer literal is one of the standard typedefs such as std::chrono::hours. The result on a floating-point literal is a duration type with the specified tick period and an unspecified floating-point representation, for example 1.5e2ms might be equivalent to chrono::duration<long double, chrono::milli>(1.5e2).