List & Arrays to chunks

Published: December 7, 2019

When you work with large lists or arrays, you might want to handle the elements in chunks to work with fewer elements. Let's do that with an extension method.

csharp

public static class ArrayExtensions
{
  public static IEnumerable<IEnumerable<T>> Split<T>(this IEnumerable<T> list, int size)
  {
    for (var i = 0; i < (float)list.Count() / size; i++)
    {
      yield return list.Skip(i * size).Take(size);
    }
  }
}

class Program
{
  static void Main(string[] args)
  {
    var list = new List<int>{1,2,3,4,5,6,7,8,9,10,11};
    var chunks = list.Split(3);
    foreach(var chunk in chunks){
      Console.WriteLine($"[{string.Join(',', chunk)}]");
    }
  }
}