Don, el 2 de diciembre a las 22:20 me escribiste: > Leandro Lucarella wrote: > >BCS, el 2 de diciembre a las 17:37 me escribiste: > >>Hello Leandro, > >> > >> > >>>If you say dynamic languages don't have metaprogramming capabilities, > >>>you just don't have any idea of what a dynamic language really is. > >>> > >>If you say you can do metaprogramming at runtime you just don't have > >>any idea of what I want to do with metaprogramming. For example: > > > >What you say next, is not metaprogramming per se, they are performance > >issues (that you resolve using compile-time metaprogramming). > > They are metaprogramming tasks. Dynamic languages can do some > metaprogramming tasks. They can't do those ones.
Because they make no sense, I really don't know how to put it. If you need speed, you code in C/C++/D whatever. Its like saying that you can't fly with a car and that's a problem. It's not, cars are not supposed to fly. If you need to fly, go buy a plane or a helicopter. Of course is much cooler to fly than to drive a car, but if you need to go just a couple of miles, flying gets really annoying, and it would take you more time, money and effort to do it than using your car. > >You are right, but if you *don't* need *speed*, you don't need all that > >stuff, that's not metaprogramming to fix a "logic" problem, they are all > >optimization tricks, if you don't need speed, you don't need optimization > >tricks. > > "you don't need speed" is a pretty glib statement. I think the I don't know what that means... > reality is that you don't care about constant factors in speed, even > if they are large (say 200 times slower is OK). But bubble-sort is > probably still not acceptable. Bubble sort is perfeclty acceptable for, say, a 100 elements array. > Metaprogramming can be used to reduce big-O complexity rather than > just constant-factor improvement. Lumping that in with > "optimisation" is highly misleading. It always depends on the context, of course, but when doing programs that deals with small data sets and are mostly IO bounded, you *really* can care less about performance and big-O. -- Leandro Lucarella (AKA luca) http://llucax.com.ar/ ---------------------------------------------------------------------- GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) ---------------------------------------------------------------------- "CIRILO" Y "SIRACUSA" DE "SEÑORITA MAESTRA": UNO MUERTO Y OTRO PRESO -- Crónica TV
