Is there an “upto” method in C#?

Question

Here\'s a bit of code which prints out the squares of the numbers from 0 to 9:

for (int i = 0; i < 10; i++)
    Console.WriteLine(i*i);

Doin

Answer 1

Try this:

public static class IntExtensions
{
    public static void UpTo(this int n, Action proc)
    {
        for (int i = 0; i < n; i++)
            proc(i);
    }
}

With this you could write

10.UpTo(i => Console.WriteLine(i * i));

The function I wrote is called an extension method.
At design time you notice is not a native function because it has a different icon.
Estension methods are static methods or functions included in a static class and type they work on is the first param on which you must use this keyword.
In IntExtensions class you could write all methods you please; grouping them inside the same static class makes you easy manage them.