Method overload resolution with regards to generics and IEnumerable

Question

I noticed this the other day, say you have two overloaded methods:

public void Print(IEnumerable items) {
    Console.WriteLine(\"IEnumerab         


        

Answer 1

Because the methods generated from the generics Print(Person[] item) and Print(List item) are a better match than IEnumerable.

The compiler is generating those methods based on your type arguments, so the generic template Print(T item) will get compiled as Print(Person[] item) and Print(List item) (well, whatever type represents a List at compilation). Because of that, the method call will be resolved by the compiler as the specific method that accepts the direct type, not the implementation of Print(IEnumerable).