At first, you could consider a function object as an ordinary function that is written in a more complicted way: Instead of writing all the function statements inside the function body,

• At first, you could consider a function object as an ordinary function that is written in a more complicted way: Instead of writing all the function statements inside the function body,

  • void fo( ) {
  • statements
  • }

• you write them inside the body of operator ( ) of the function object class:

  • class FunctionObjectType {
  • public:
  • void operator( ) (...) {
  • statements
  • }
  • }