Re: [boost] [review] Fusion review begins: iterator equal_to doesn't compare values

From: Larry Evans (cppljevans_at_[hidden])
Date: 2006-05-11 05:28:25

On 05/10/2006 11:18 PM, David Abrahams wrote:
> Larry Evans <cppljevans_at_[hidden]> writes:
[snip]
>>however, if two stl iterator's do compare equal then the operator*
>>would return the same value for the same number of operator++'s,
>>wouldn't they?
> 
> 
> Assuming the comparison was a well-defined operation in the first
> place, yes.  If you're comparing iterators from different sequences,
> all bets are off.
> 
Thanks!  That last statement convinces me.  I remember vaguely reading
about that somewhere in the standard.  Dan's remark about
"Comparing iterators from different sequences" being undefined
was what first prompted my memory about that.