[boost] Re: [Review] Named parameters library

From: Daniel Wallin (dalwan01_at_[hidden])
Date: 2004-11-13 18:06:39

Rene Rivera wrote:
> Daniel James wrote:
> 
>> David Abrahams wrote:
>>
>>> This approach is superior to bgl_named_params in part because it
>>> avoids undue coupling and dependency in a library design.  That
>>> coupling is discussed in depth in this excerpt from C++ Template
>>> Metaprogramming (http://www.boost-consulting.com/mplbook):
>>
>>
>> [snipped]
>>
>> This coupling could be avoided by using an overloaded operator to 
>> combine the arguments, for example:
>>
>>     f(slew(.799) | name("z"));
>>
>> An advantage of this method is that it avoids the need for the 
>> forwarding functions.
> 
> 
> I was just going over the library and have a related question. Is there 
> a rational as to why the forwarding functions where used instead of 
> overloading the "," operator?

operator, *is* overloaded. It's just that if you use it you have to:

   (1) Add additional parameters around the parameter list.
   (2) Only use named parameters, position gets no meaning.

-- 
Daniel Wallin