Lvalue Min and Max in C++

1 comments

• sixthDot 16 hours ago

  I cannot reply on the blog but to answer the author about other languages, here is the D version, using a single template:

      auto ref T max(T)(auto ref T u, auto ref T v) => u > v ? u : v;
      
      void main()
      {
          int a = 1;
          int b = 0;
          int x;
  
          static assert(__traits(compiles, &max(a,b) == &a),
              "should have selected the lvalue version");
          static assert(__traits(compiles, x = max(1,0)),
              "should have selected the rvalue version");
          static assert(__traits(compiles, x = max(a,0)),
              "should have selected the rvalue version");
          static assert(__traits(compiles, x = max(1,0)),
              "should have selected the rvalue version");
      }