IEnumerable To Covariant - CSharp System.Collections.Generic

CSharp examples for System.Collections.Generic:IEnumerable

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Description

IEnumerable To Covariant

Demo Code

/* ****************************************************************************
 *
 * Copyright (c) Microsoft Corporation. 
 *
 * This source code is subject to terms and conditions of the Microsoft Public License. A 
 * copy of the license can be found in the License.html file at the root of this distribution. If 
 * you cannot locate the  Microsoft Public License, please send an email to 
 * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound 
 * by the terms of the Microsoft Public License.
 *
 * You must not remove this notice, or any other, from this software.
 *
 *
 * ***************************************************************************/
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.Collections;
using System;//ww w  . ja v  a 2 s.c  o m

public class Main{
        public static IEnumerable<S> ToCovariant<T, S>(IEnumerable<T> enumerable)
            where T : S {
            return new CovariantConvertor<T, S>(enumerable);
        }
        public static IEnumerator<S> ToCovariant<T, S>(IEnumerator<T> enumerator)
            where T : S {

            Contract.RequiresNotNull(enumerator, "enumerator");

            while (enumerator.MoveNext()) {
                yield return enumerator.Current;
            }
        }
}

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