Re: [Boost-users] [boost] [review][constrained_value] Review ofConstrainedValueLibrary begins today

Subject: Re: [Boost-users] [boost] [review][constrained_value] Review ofConstrainedValueLibrary begins today
From: Gordon Woodhull (gordon_at_[hidden])
Date: 2008-12-09 00:06:45

On Dec 8, 2008, at 7:39 PM, Robert Kawulak wrote:
>> 	> From: Jesse Perla
>> > 2) Dynamic Bounded Types: Right now the static bounds are  
>> associated
>> globally with a type, and the dynamic bounds are associated with an  
>> instance of
>> a type.  Since many use cases involve setting dynamic sets and then  
>> creating
>> instances, it is crucial that this type of set is implemented.  See  
>> Robert's
>> rough notes in: http://lists.boost.org/boost-users/2008/12/42959.php
> 	
> Yes, this might be added in the future to the library itself. But  
> first I want
> to become confident this is what actually users need and that this  
> solution is
> general enough. Therefore, I'd be grateful if you (and other  
> possible users)
> could test the provided code and say how well is it fulfilling the  
> requirements.
> ;-)

This too is already solved if any predicate is acceptable: just use a  
predicate functor that forwards via a pointer or reference to another  
global predicate.  Or (somewhat less efficient but easier) use the  
dynamic boost::function predicate that is already included and  
boost::bind/lambda/phoenix to a method on this global object.