From: Darren Cook (darren_at_[hidden])
Date: 2004-02-16 07:19:07
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;