/// <summary>
/// Create a filtered view for <paramref name="source"/>.
/// </summary>
/// <typeparam name="T">The type of the elements in the source collection.</typeparam>
/// <param name="source">The source observable.</param>
/// <param name="filter">The predicate to filter by.</param>
/// <returns>A <see cref="ReadOnlyFilteredView{T}"/>.</returns>
public static ReadOnlyFilteredView <T> AsReadOnlyFilteredView <T>(
this IObservable <Maybe <IEnumerable <T> > > source,
Func <T, bool> filter)
{
Ensure.NotNull(source, nameof(source));
Ensure.NotNull(filter, nameof(filter));
return(source.AsReadOnlyView()
.AsReadOnlyFilteredView(filter, leaveOpen: false));
}
/// <summary>
/// Create a filtered view for <paramref name="source"/>.
/// </summary>
/// <typeparam name="T">The type of the elements in the source collection.</typeparam>
/// <param name="source">The source observable.</param>
/// <param name="filter">The predicate to filter by.</param>
/// <returns>A <see cref="ReadOnlyFilteredView{T}"/>.</returns>
public static ReadOnlyFilteredView <T> AsReadOnlyFilteredView <T>(
this IObservable <Maybe <IEnumerable <T>?> > source,
Func <T, bool> filter)
{
if (source is null)
{
throw new ArgumentNullException(nameof(source));
}
if (filter is null)
{
throw new ArgumentNullException(nameof(filter));
}
return(source.AsReadOnlyView()
.AsReadOnlyFilteredView(filter, leaveOpen: false));
}
