2011
03.01
03.01
I read some interesting articles about nested function by C[1][2] and thought this is easy to be implemented by C++, so I wrote one C++ version.
1. 在 C 语言中包装函数 — Closure 和 GCC nested function
2. GCC 的 nested function 與 trampoline
#include 〈iostream〉
using namespace std;
typedef int (*func_t)(int arg);
class create_wrap_function
{
public:
create_wrap_function( func_t f):wrapped_func(f){}
int operator()( int arg)
{
cout << "yooo" << endl;
wrapped_func( arg);
}
private:
create_wrap_function();
func_t wrapped_func;
};
int foo(int a)
{
return a + 1;
}
int main( void)
{
create_wrap_function bar( foo);
cout << bar(2) << endl;
return 0;
}
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