ToReadOnly< T >()

static ReadOnlyCollection< T > System.Dynamic.Utils.CollectionExtensions.ToReadOnly< T > ( this IEnumerable< T > enumerable )

inlinestatic

Definition at line 48 of file CollectionExtensions.cs.

    {
        if (enumerable == null)
        {
            return EmptyReadOnlyCollection<T>.Instance;
        }
        if (enumerable is TrueReadOnlyCollection<T> result)
        {
            return result;
        }
        if (enumerable is ReadOnlyCollectionBuilder<T> readOnlyCollectionBuilder)
        {
            return readOnlyCollectionBuilder.ToReadOnlyCollection();
        }
        T[] array = enumerable.ToArray();
        if (array.Length != 0)
        {
            return new TrueReadOnlyCollection<T>(array);
        }
        return EmptyReadOnlyCollection<T>.Instance;
    }

References System.array, and System.Linq.enumerable.