Case Range Statement ..

[Walter Bright]

BCS wrote:
> Hello Walter,
> 
>>>> It's handy for things like rewriting ++e so it can be used more than
>>>> once but is only evaluated once:
>>>>
>> (tmp = ++e, tmp)
>>
>>> Uh? How is that different from "++e"
>>>
>> You can then use tmp more than once with only one increment of e.
>>
> 
> how does that differ from using ++e the first time and then e for the 
> other times?


1. e may be a global
2. ++e may be a more complicated expression with side effects