Ninjanaut/foreach-with-index.md

Created November 1, 2021 10:41

Star (0) You must be signed in to star a gist
Fork (1) You must be signed in to fork a gist

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/Ninjanaut/0352e7d3afd14fc2ff3fc935b0a6a0a3.js"></script>
Save Ninjanaut/0352e7d3afd14fc2ff3fc935b0a6a0a3 to your computer and use it in GitHub Desktop.

foreach-with-index

Raw

using System.Collections.Generic;
using System.Linq;

namespace Web.Utility.Extensions
{
    public static class IEnumerableExtensions
    {
        public static IEnumerable<(T item, int index)> WithIndex<T>(this IEnumerable<T> self) => self?.Select((item, index) => (item, index)) ?? new List<(T, int)>();
    }
}

foreach (var (item, index) in collection.WithIndex())
{
    Debug.WriteLine($"{index}: {item}");
}