Hi Folks,
I'm porting a C++ project from CW to Xcode, and I cannot understand the
problem with the following code. This code compiles and runs in CW, but
Xcode/GCC won't accept it. Does anyone see what's wrong here:
#include <iostream>
#include <vector>
namespace aux {
template <class Return, class Type>
class mem_fun_t
{
typedef Return (Type::*Func)();
public:
explicit mem_fun_t(Func func) :
func_(func) {}
Return operator() (Type* obj) const { return (obj->*func_)(); }
Return operator() (Type& obj) const { return (obj.*func_)(); }
private:
Func func_;
};
template <class Iterator, class Function>
inline
Function
for_each(Iterator first, Iterator last, Function func)
{
return std::for_each(first, last, func);
}
template <class Container, class Function>
inline
Function
for_each(Container& cont, Function func)
{
return aux::for_each(cont.begin(), cont.end(), func);
}
template <class Iterator, class Return, class Class>
inline
mem_fun_t<Return, Class>
for_each(Iterator first, Iterator last, Return (Class::*func)())
{
return std::for_each(first, last, mem_fun_t<Return, Class>(func));
}
template <class Container, class Return, class Class>
inline
mem_fun_t<Return, Class>
for_each(Container& cont, Return (Class::*func)())
{
return aux::for_each(cont.begin(), cont.end(), mem_fun_t<Return,
Class>(func));
}
}
class Abc {
public:
void DoSomething() { std::cout << "DoSomething()" << std::endl; }
};
int main (int argc, char * const argv[]) {
std::vector<Abc*> data;
data.push_back(new Abc);
aux::for_each(data, Abc::DoSomething);
return 0;
}
/*
/Users/mall/Desktop/CPP/main.cpp:62: error: invalid use of non-static member
function 'void abc::DoSomething()'
/Users/mall/Desktop/CPP/main.cpp:62: error: invalid use of non-static member
function
/Users/mall/Desktop/CPP/main.cpp:62: instantiated from here
/Users/mall/Desktop/CPP/main.cpp:34: error: invalid use of non-static member
function
/Users/mall/Desktop/CPP/main.cpp:34: instantiated from 'Function
aux::for_each(Container&, Function) [with Container = std::vector<abc*,
std::allocator<abc*> >, Function = void (abc::)()]'
/Users/mall/Desktop/CPP/main.cpp:62: instantiated from here
/Users/mall/Desktop/CPP/main.cpp:26: error: invalid use of non-static member
function
/Users/mall/Desktop/CPP/main.cpp:26: instantiated from 'Function
aux::for_each(Iterator, Iterator, Function) [with Iterator =
__gnu_cxx::__normal_iterator<abc**, std::vector<abc*, std::allocator<abc*> >
>, Function = void (abc::)()]'
/Users/mall/Desktop/CPP/main.cpp:34: instantiated from 'Function
aux::for_each(Container&, Function) [with Container = std::vector<abc*,
std::allocator<abc*> >, Function = void (abc::)()]'
/Users/mall/Desktop/CPP/main.cpp:62: instantiated from here
/Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_algo.h:159:
error: invalid use of non-static member function
*/
Thanks
-Mark
------------------------------------------------------------------------
Mark Alldritt Late Night Software Ltd.
Phone: 250-380-1725 Script Debugger 4.0 - AppleScript IDE
WEB: http://www.latenightsw.com/ FaceSpan 4.3 - AppleScript RAD
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