Please vote once and for good: range operations

John Reimer terminal.node at gmail.com
Wed Jan 28 20:33:24 PST 2009


Hello Andrei,

> Simen Kjaeraas wrote:
> 
>> Andrei Alexandrescu wrote:
>> 
>>> So please let's vote once and for all.
>>> 
>>> Andrei
>>> 
>> Do let's. My first vote goes to first/last, with head/toe at second
>> place.
>> 
>> -- Simen
>> 
> Ok, after looking at my code I discovered a huge problem with "first".
> ("Last" is cool.) If all you do is implement them and use them with
> foreach, fine. But if you need to call them manually (which is the
> case sometimes), you get really badly interacting terms there. Look at
> this, taken from real code (the filter function):
> 
> while (!_input.empty && !pred(_input.first)) _input.next;
> 
> I can see the putative user scratching their head: "Ok, so I start
> iteration with the first element, then I move to the next one... but
> then why the heck am I looking at the first again?"
> 
> "First" must go.
> 
> Andrei
> 


It can walk the plank on the starboard side. :)


-JJR


-JJR





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