Default generic parameter value : Generic Parameter « Generic « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Generic
3. Generic Parameter

using System;

public class Bag<T>
{
    public Bag() {
        // Create initial capacity.
        imp = new T[ 4 ];
        for( int i = 0; i < imp.Length; ++i ) {
            imp[i] = default(T);
        }
    }

    public bool IsNull( int i ) {
        if( i < 0 || i >= imp.Length ) {
            throw new ArgumentOutOfRangeException();
        }

        if( Object.Equals(imp[i], default(T)) ) {
            return true;
        } else {
            return false;
        }
    }
    private T[] imp;
}

public class MainClass
{
    static void Main() {
        Bag<int> intBag = new Bag<int>();

        Bag<object> objBag = new Bag<object>();

        Console.WriteLine( intBag.IsNull(0) );
        Console.WriteLine( objBag.IsNull(0) );
    }
}

True
True