/// <summary>
/// Creates a <see cref="IFuture{T}"/> which has its value set
/// immediately upon construction.
/// </summary>
/// <param name="value">The value that the returned future shoud hold.</param>
/// <returns>A <see cref="IFuture{T}"/> whose value is
/// <paramref name="value"/> and is in the completed state.</returns>
/// <remarks>
/// The getters just return the value. This
/// <see cref="IFuture{T}"/> can't be cancelled or timed out and its
/// <see cref="IFuture{T}.IsCompleted"/> property always returns
/// <c>true</c>.
/// </remarks>
public static IFuture <T> ImmediateFuture <T>(T value)
{
SettableFuture <T> future = new SettableFuture <T>();
future.Set(value, true);
return(future);
}