NAME

       std::literals::chrono_literals

SYNOPSIS

   Functions
       constexpr chrono::day operator''d (unsigned long long __d) noexcept
           Literal suffix for creating chrono::day objects.
       template<char... _Digits> constexpr chrono::hours operator''h ()
           Literal suffix for durations of type std::chrono::hours
       constexpr chrono::duration< long double, ratio< 3600, 1 > > operator''h (long double
           __hours)
           Literal suffix for durations representing non-integer hours.
       template<char... _Digits> constexpr chrono::minutes operator''min ()
           Literal suffix for durations of type std::chrono::minutes
       constexpr chrono::duration< long double, ratio< 60, 1 > > operator''min (long double
           __mins)
           Literal suffix for durations representing non-integer minutes.
       template<char... _Digits> constexpr chrono::milliseconds operator''ms ()
           Literal suffix for durations of type std::chrono::milliseconds
       constexpr chrono::duration< long double, milli > operator''ms (long double __msecs)
           Literal suffix for durations representing non-integer milliseconds.
       template<char... _Digits> constexpr chrono::nanoseconds operator''ns ()
           Literal suffix for durations of type std::chrono::nanoseconds
       constexpr chrono::duration< long double, nano > operator''ns (long double __nsecs)
           Literal suffix for durations representing non-integer nanoseconds.
       template<char... _Digits> constexpr chrono::seconds operator''s ()
           Literal suffix for durations of type std::chrono::seconds
       constexpr chrono::duration< long double > operator''s (long double __secs)
           Literal suffix for durations representing non-integer seconds.
       template<char... _Digits> constexpr chrono::microseconds operator''us ()
           Literal suffix for durations of type std::chrono::microseconds
       constexpr chrono::duration< long double, micro > operator''us (long double __usecs)
           Literal suffix for durations representing non-integer microseconds.
       constexpr chrono::year operator''y (unsigned long long __y) noexcept
           Literal suffix for creating chrono::year objects.

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).

       Since
           C+14

Author

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