When should i use the "this" pointer?

[SomeAmazingGuy]

I know the pointer returns the instance of a class but.. the thing i don't understand is when i should use "this" pointer.

Should i only use the pointer when i have overloaded an operator in a class function that uses the class name as a return type?

[mzzz]

there is another application.
if parameter's name of class's member function is same as the class member variable.
for example:

class A{
 public:
     void setx(int x){
          this->x = x;
     }
 private:
      int x;
}

in above code, member functionsetx()'s parameter name is as same as its member field x. in this situation, you must use keywordthis

[Peter87]

The this keyword is also useful if you want to pass the object to a function.

void bar(A&);

class A{
 public:
     void foo(){
          bar(*this);
     }
};