2 ms·

Beside performance impact, how is it different than what is possible with virtual method (dyn dispatch)?

• svieira 4y ago
  One jump vs. multiple pointer dereferences.
• munificent 4y ago
  Virtual dispatch makes it much harder for an optimizing compiler to inline method calls, so there is a significant performance hit even for callsites that do end up always calling the same method.
  • kaba0 4y ago
    In AOT compiled languages at least, it is an often performed optimization in JIT compilers. Also, I was explicitly asking besides performance.
    • skitter 4y ago
      Since you have the concrete type, you can do stuff like storing it inline (which may not be possible if you don't know its size).