Errors in TDPL

[Andrei Alexandrescu]

On 06/21/2010 06:35 PM, Leandro Lucarella wrote:
> Andrei Alexandrescu, el 21 de junio a las 17:43 me escribiste:
>> If efficiency is still sub-par, retro could detect that it's working
>> with iota and generate specialized code. That's not too difficult;
>> for integers, retro(iota(a, b)) could actually be a rewrite to
>> iota(b - 1, a, -1). Figuring out all corner cases, steps greater
>> than 1, and what to do for floating point numbers is doable but not
>> trivial either, and works against modularity. Anyway, it does look
>> like it's all about an implementation matter.
>
> I'm scared, I've heard that in C++ so many times... =)

Particularly in conjunction with iostreams. Their slow speed has been an 
implementation issue for, what, 26 years and still going strong. :o)

Fortunately, in the case of iota, it's pretty clear what needs to be done.

Andrei