How to create a sequence of integers in C#?

Question

F# has sequences that allows to create sequences:

seq { 0 .. 10 }

Create sequence of numbers from 0 to 10.

Is there someth

Answer 1

In C# 8.0 you can use Indices and ranges

For example:

var seq = 0..2;
var array = new string[]
{
    "First",
    "Second",
    "Third",
};

foreach(var s in array[seq])
{
    System.Console.WriteLine(s);
}
// Output: First, Second

Or if you want create IEnumerable then you can use extension:

public static IEnumerable ToEnumerable(this Range range)
{
   for (var i = range.Start.Value; i < range.End.Value; i++)
   {
       yield return i;
   }
}
...
var seq = 0..2;

foreach (var s in seq.ToEnumerable())
{
   System.Console.WriteLine(s);
}
// Output: 0, 1

P.S. But be careful with 'indexes from end'. For example, ToEnumerable extension method is not working with var seq = ^2..^0.