public static bool Contains <TSource>(this IReadOnlyList <TSource> source, TSource value, IEqualityComparer <TSource> comparer)
{
switch (source)
{
case TSource[] array:
return(ArrayExtensions.Contains <TSource>(array, value, comparer));
default:
return(ReadOnlyList.Contains <IReadOnlyList <TSource>, IEnumerator <TSource>, TSource>(source, value, comparer));
}
}
public static bool Contains <TSource>(this ImmutableList <TSource> source, TSource value, IEqualityComparer <TSource>?comparer) => ReadOnlyList.Contains <ImmutableList <TSource>, TSource>(source, value, comparer);
public static bool Contains <TList, TSource>(this TList source, TSource value, IEqualityComparer <TSource>?comparer = null)
where TList : notnull, IReadOnlyList <TSource>
=> ReadOnlyList.Contains <TList, TSource>(source, value, comparer, 0, source.Count);