(Prolog) Predicate

Defined in the PREDICATES section.

% Some predicates
predicates
  myFunction1()
  myFunction2(integer)- (i)
  myFunction3(integer,string)- (i,i)

Predicates can have different modes:

Comparison to other languages

A Prolog predicate is like a C declaratation/C++ declaration.

% Some predicates in Prolog
predicates
  myFunction1()
  myFunction2(string)- (i)
  myFunction3(string,string)- (i,o)

//Function declarations in C
  void myFunction1(void)
  void myFunction2(const char *); //'const' means 'read only', denoting input
  void myFunction3(const char *, char *);

//Function declarations in C++
void myFunction1()
void myFunction2(const std::string&); //'const' means 'read only', 
                                      //denoting input
                                      //'&' means 'reference'
void myFunction3(const std::string&, std::string&);

last edited (December 6, 2006) by bilderbikkel, Number of views: 1062, Current Rev: 4 (Diff)

[Edit this page] [Page history] [What links here] [Discuss this topic] [Printer Friendly]