I need an explanation to C# program output

Question

using System;

public class Test
{
    static void Main()
    {
        PrintMethod("Hello World");
    }
    
    static void PrintMethod(object x)
    {
        Console.WriteLine("object called");
    }
    
    static void PrintMethod<T>(params T[] x)
    {
        Console.WriteLine("params T method called[]");
    }
}

Output: params T method called[]

Can someone help me with the explanation? I want to know why we are not using first printMethod

[Overload method resolution](https://learn.microsoft.com/en-us/dotnet/visual-basic/reference/language-specification/overload-resolution) — Steve, Sep 02 '21 at 13:51
If we infer `T` to be `string`, the second method is an exact match. Why wouldn't it be chosen? — Damien_The_Unbeliever, Sep 02 '21 at 13:51
`"Hello World"` is a string, not an object, therefore the second method is chosen based on the rules outlined in @Steve's link. — JNevill, Sep 02 '21 at 13:53
@DStanley: The first sentence in the link provided above reads: *"In practice, the rules for determining overload resolution are intended to find the overload that is 'closest' to the actual arguments supplied."* — Robert Harvey, Sep 02 '21 at 13:58

score -1 · Answer 1 · answered Sep 02 '21 at 13:57

-1

Check here about function overloading order.

The idea is that object is always last in overload order.

answered Sep 02 '21 at 13:57

Ygalbel

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I need an explanation to C# program output

1 Answers1