2011/3/15 Howard Hinnant <howard.hinnant@gmail.com>:
On Mar 15, 2011, at 2:00 PM, Vicente Botet wrote:
The current std::chrono::duration default constructor has this definition:
constexpr duration() = default;
hmm, I'm a little confused now
The rationale for this is to give the client and the Rep author as many options as possible:
typedef std::chrono::duration<long long> D;
D d1; // d1.count() uninitialized - speed D d2 = D(); // d2.count() zero-initialized - safety if you believe 0 is safe
This behavior is exactly what I desire
typedef std::chrono::duration<BigInt> CustomD;
CustomD d3; // d3.count() default constructed
But the current implementation of Boost.Chrono does not work like that: typedef std::chrono::duration<long long> D; D d2 = D(); // d2.count() UNINITIALIZED Will the semantics of
constexpr duration() = default;
implement the proposed behavior with the new standard? Regards, Joachim -- Interval Container Library [Boost.Icl] http://www.joachim-faulhaber.de