c++ - When should this-> be used? -

i wondering if this-> should used both:

void someclass::somefunc(int powder) {      this->powder = powder; }  //and void someclass::somefunc(bool enabled) {      this->isenabled = enabled; } 

i'm wondering if latter necessary proper or if isenabled = enabled suffice.

thanks

this-> 

is needed when using member directly ambiguous. happen template code.

consider this:

#include <iostream>  template <class t> class foo {    public:       foo() {}    protected:       void testing() { std::cout << ":d" << std::endl; } };  template <class t> class bar : public foo<t> {    public:       void subtest() { testing(); } };  int main() {    bar<int> bar;    bar.subtest(); } 

this fail since calling testing() dependent on template parameter. mean function have this->testing(); or foo<t>::testing();

error message:

temp.cpp: in member function ‘void bar<t>::subtest()’: temp.cpp:16:32: error: there no arguments ‘testing’ depend on template parameter, declaration of ‘testing’ must available [-fpermissive] temp.cpp:16:32: note: (if use ‘-fpermissive’, g++ accept code, allowing use of undeclared name deprecated)