Default generic value : default « Generic « C# / CSharp Tutorial

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

using System;

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

    public bool IsNull( int i ) {
        if( imp[i] == null ) {
            return true;
        } else {
            return false;
        }
    }

    private T[] imp;
}

public class EntryPoint
{
    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) );
    }
}

False
True