Integers class...?

[Greg Ewing]

Bernhard Herzog wrote:
> 
> Slices support a step parameter, so
> 
>     for x in int[9:-1:-1]:

I don't consider that a good solution, for
two reasons:

(1) I'm not sure what the semantics are of
slices with negative steps.  There are at 
least 4 equally plausible interpretations of 
[a:b:-c] if you count all the possible
combinations of endpoint swapping and 
open/closed swapping.

(2) Even if the semantics are well-defined,
it's too mind-bending remembering and applying
them correctly in any given situation. It's
no better than range(a,b,-c) in that respect.

This is one of the things I was trying to
address with for x <= i < y.

-- 
Greg Ewing, Computer Science Dept, University of Canterbury,	  
Christchurch, New Zealand
To get my email address, please visit my web page:	  
http://www.cosc.canterbury.ac.nz/~greg