Re: [Boost-Users] Query about boost type traits

Hi Toon Thanks for the lead:: http://www.cuj.com/experts/1810/alexandr.htm I checked it out. Alex wrote about 3 solutions for the problem 1. Specialize on meber function argument type (e.g., add IntToType as a parameter type) 2. Create external template helper class with specialization, and call that from member function. 3. Create internal template helper class. The article conclused that 1 was usually best. But in the case of an operator function (operator::*) the number of arguments are pre-defined, so that is not an immediate option, although functions to be called from inside the body of operator*() could be added. As it happens I have already coded solution 2, so I think I'll stick with that (also saves clutter inside struture definition). Code is in last message I posted to this list. Cheers Craig Hicks Toon Knapen wrote:

On Friday 03 May 2002 13:58, John Maddock wrote:

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I know how to use type traits to enable compile time seperate procedures, but not how to use it to define a procedure for some type and not others.

check out http://groups.yahoo.com/group/Boost-Users/message/741

from Aleksey in teaching me how to combine MPL with the type_traits. BTW, the article of Andrei really helps (I had read it before but finally understood it really trying it muself)

t

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