Thoughts on foreach with Enumerable.Range vs traditional for loop

Question

In C# 3.0, I\'m liking this style:

// Write the numbers 1 thru 7
foreach (int index in Enumerable.Range( 1, 7 ))
{
    Console.WriteLine(index);
}

Answer 1

How to use a new syntax today

Because of this question I tried out some things to come up with a nice syntax without waiting for first-class language support. Here's what I have:

using static Enumerizer;

// prints: 0 1 2 3 4 5 6 7 8 9
foreach (int i in 0 <= i < 10)
    Console.Write(i + " ");

Not the difference between <= and <.

I also created a proof of concept repository on GitHub with even more functionality (reversed iteration, custom step size).

A minimal and very limited implementation of the above loop would look something like like this:

public readonly struct Enumerizer
{
    public static readonly Enumerizer i = default;

    public Enumerizer(int start) =>
        Start = start;

    public readonly int Start;

    public static Enumerizer operator <(int start, Enumerizer _) =>
        new Enumerizer(start);

    public static Enumerizer operator >(int _, Enumerizer __) =>
        throw new NotImplementedException();

    public static IEnumerable operator <=(Enumerizer start, int end)
    {
        for (int i = start.Start; i < end; i++)
            yield return i;
    }

    public static IEnumerable operator >=(Enumerizer _, int __) =>
        throw new NotImplementedException();
}