[boost] FC++ Lambda

16 Feb 2004


      Hi,
I've read the lambda sections of the FC++ docs, and the paper on the 
subject, and am a bit confused how to use it. Could you show the FC++ 
equivalents of these BLL examples:

1. (from the paper)
   int a[]={5,3,8,4};
   std::for_each(a,a+4,std::cout<<_1<<"\n");


2.
   int a[]={5,3,8,4};
   std::for_each(a,a+4,std::cout<<constant("v=")<<_1<<"\n");


3. (a vector of MyClass pointers)
     std::for_each(
	tests.begin(),
	tests.end(),
	bind(&MyClass::save,_1,f)
	);

4.
     std::for_each(
	tests.begin(),
	tests.end(),
	bind(delete_ptr(), _1)
	);

5.  (in a spirit parser)
     Node= +(
	(+range_p('A','Z'))[bind(&MyClass::on_name, this, _1,_2)]
	>> +(
	ch_p('[')
	>> (*(anychar_p-']'))[bind(&MyClass::on_value, this, _1,_2)]
	>> ch_p(']')
	)
	);


Darren


*: For each I'm doing something like:
#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
#include <boost/lambda/construct.hpp>

using namespace boost::lambda;

[boost] FC++ Lambda

Darren Cook