public void Identity()
{
Func <string, string> identity = Functor.Identity <string>();
Assert.That(identity.Target, Is.Not.Null);
for (int i = 0; i < 200; ++i)
{
string functionArg = new String('z', i);
Assert.That(identity(functionArg), Is.SameAs(functionArg));
}
}
/// <summary>
/// Creates an <see cref="IEnumerable<T>"/> that is not down-castable to its
/// concrete collection type.
/// </summary>
///
/// <typeparam name="T">
/// The type of element contained in the enumerator and source collection.
/// </typeparam>
///
/// <param name="source">
/// The collection to adapt to the non-castable reference.
/// </param>
///
/// <returns>
/// A new <see cref="IEnumerable<T>"/> instance that provides a new enumerator
/// to the given collection.
/// </returns>
public static IEnumerable <T> AsNonCastableEnumerable <T>(this IEnumerable <T> source)
{
return(source.Select(Functor.Identity <T>()));
}
