Question

I need a function that can simulate the C++ for statement.
I want something that I can give a starting point, an end and another variable that will say how much to increment at a time.

For example if I tell it to start at 10, end at 1 and increment 2 at a time, it will generate 10, 8, 6, 4, 2.

Answer 1

You want step. It is used like this:

10.step(1, -2) do |x|
    puts x
end

This results in:

10
8
6
4
2