CloudMusic/FNZCM/FNZCM.BlazorWasm/ExtenstionMetohd.cs

namespace FNZCM.BlazorWasm
{
    public static class ExtenstionMetohd
    {
        public static IEnumerable<(T item, int index)> WithIndex<T>(this IEnumerable<T> self)
         => self.Select((item, index) => (item, index));
    }
}