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[Some C++] #c++
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#include <iostream> | |
#include <functional> | |
class MemFunTest | |
{ | |
public: | |
bool test0() | |
{ | |
std::cout << "[" << this <<"-test0 called]" << std::endl; | |
return false; | |
} | |
bool test1(int a) | |
{ | |
std::cout << "[" << this <<"-test1(" << a << ") called]" << std::endl; | |
return false; | |
} | |
bool test2(int a, int b) | |
{ | |
std::cout << "[" << this <<"-test2(" << a << "," << b << ") called]" << std::endl; | |
return false; | |
} | |
}; | |
int main() | |
{ | |
// for member function, use std::mem_fun and std::bind1st | |
std::mem_fun_t< bool, MemFunTest> fo0 = std::mem_fun(&MemFunTest::test0); | |
std::mem_fun1_t<bool, MemFunTest, int> fo1 = std::mem_fun(&MemFunTest::test1); | |
//std::mem_fun2_t<bool, MemFunTest, int, int> fo2 = std::mem_fun(&MemFunTest::test2); <-- compile error, mem_fun doesn't work on binary fuctions | |
MemFunTest foo; | |
//fo0(); <-- compile error, as expected | |
//fo0(foo); <-- compile error, as expected | |
fo0(&foo); | |
//fo1(); <-- compile error, as expected | |
//fo1(&foo); <-- compile error, as expected | |
fo1(&foo, 3); | |
/*std::binder1st<Operation>*/ //std::bind1st(fo0, &foo); <-- compile error, since bind1st works only on binary fuctions | |
std::binder1st<std::mem_fun1_t<bool, MemFunTest, int> > bfo1 = std::bind1st(fo1, &foo); | |
//bfo1(); <-- compile error, as expected | |
bfo1(7); | |
return 0; | |
} |
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output of rev 1 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48) :
[0x7fffd475bd6f-test0 called]
[0x7fffd475bd6f-test1(3) called]
[0x7fffd475bd6f-test1(7) called]