c++11 - What does this "return ~Result(0)" mean in C++? -


i have never seen before... curious know "return ~result(0)" does. 

simple::result screen::pickpoint(const point& point) const     {      if(scnr.haspoint())         return scnr.getindex();     else         return ~result(0);     }

assuming simple::result has overloaded bitwise not operator (~). call overloaded operator in simple::result class , return result.

if ~ operator performs bitwise not operation, function should return simple::result 1s (in binary) when scnr.haspoint returns false.

you can read more bitwise not operator here.


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