Generalized range

[Michael Hoffman]

tkpmep at hotmail.com wrote:
> Thanks - you have covered a fair bit of gorund here - I will modify
> myRange taking your suggestions into account. The one suggestion that
> I'm going to have to think through is repeatedly incrementing res.
> 
> I deliberately did not use this as repeated addition can cause
> rounding errors to accumulate, making the loop run a little longer or
> shorter than necessary. I thought I would be far less likely to run
> into rounding issues with a multiplicative construct - hence my use of
> epsilon, and my question about an appropriate value for it

You are right about rounding issues--with a sufficiently small step, the 
way I have done it, it could become an infinite loop. But you can still 
do it with multiplication, without using an epsilon constant. How about 
something like this:

index = 0
while res < maximum:
     yield minimum + (step * index)
     index += 1
-- 
Michael Hoffman