Visual Prolog 9 New Features


Revision as of 17:49, 25 February 2019 by Thomas Linder Puls (talk | contribs) (Bounded polymorphism link)

Visual Prolog 9 has a number of new language features.



  • More encryption support through the classes crypt, cryptHash and bCrypt_api.
  • Support for JSON Web Tokens (jwt).
  • Support for Password Hashing.
  • OLE drag and drop and clipboard support.
  • Support for Slim Reader/Writer locks (srwLock)
  • New package winHttp_api for client side HTTP/HTTPS operations.


  • jsonWebToken demonstrates how to create and unpack JSON Web Tokens (jwt) and a way to hash passwords.
  • tail a program that display changes to files as they happens (e.g. for live following of log files).
  • dragDropTargetOle that illustrates how OLE drag and drop and clipboard handling can be used.

See also Visual Prolog 9 Upgrade Notes.