/// <summary>
/// The events of <paramref name="source"/> when <paramref name="gate"/> is
/// true.
/// </summary>
public static IObservable <A> Gate(
IObservable <A> source,
Behaviour <bool> gate)
{
return(source.Where(_ => gate.Value));
}
/// <summary>
/// The events of <paramref name="source"/> when <paramref name="gate"/> is
/// true.
/// </summary>
public static IObservable <A> Gate <A>(
this IObservable <A> source,
Behaviour <bool> gate)
{
return(Behaviour.Gate(source, gate));
}