[Home]  [Edit this page]  [Recent Changes]  [Special Pages]  [Help] 

---

PrologSubstring

---

(Prolog) substring

substring (
  STRING InputString,      % The string to take a substring of
  UNSIGNED Position,       % At which position to start 
  UNSIGNED Length,         % How many positions to take
  STRING OutputSubstring   % The result
  ) - (i, i, i, o)

Note that the first character in InputString has position of 1.

Error 1601 can be thrown if there has been address ed beyond the string. If Length was equal to zero, however, this error will not be thrown.
[Edit this page]  [Page history]  [What links here]  [Discuss this topic]  [Printer Friendly]