gabriel-vanca/C#_foreach-with-index.md

Forked from Ninjanaut/foreach-with-index.md

Last active September 14, 2024 17:46

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

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/gabriel-vanca/f39eebfe75c2cadb8c8b94866e98cbe7.js"></script>
Save gabriel-vanca/f39eebfe75c2cadb8c8b94866e98cbe7 to your computer and use it in GitHub Desktop.

Download ZIP

C#_foreach-with-index

Raw

C#_foreach-with-index.md

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

namespace 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}");
}

Requires C# 7.0 or higher

Source: https://stackoverflow.com/a/39997157