Difference between revisions of "Visual Prolog 9 New Features"

Revision as of 14:51, 21 February 2019

Visual Prolog 9 has a number of new language features.

Bounded polymorphism
Extension Predicates.
The nondeterm fact databases have been made threadsafe (lock free)
Constant fact variables that does not change value after initialization.
New ways to pass arguments. Named, default and optional parameters and functor originals.
New attribute [mandatoryOut].
New predicate notErroneous/1->.
Bitwise and boolean operators **, ++, ...
New attribute [attribute].
Attribute [byVal] can now also be used for output arguments [byVal, out].
New attribute [pack(N)]
New directive #stringinclude.
Lazy/late fact initialization is made atomic/threadsafe.
More compact layout of functor terms on the 64 bit platform
bit::isSet/2 is handled intrinsically by the compiler ([intrinsic])

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.

@@ Line 8: / Line 8: @@
 * {{Lang2|Predicates|Extension Predicates|Extension Predicates}}.
 * The nondeterm fact databases have been made [[Threadsafe facts|threadsafe]] (lock free)
+* {{Lang2|Facts|Constant fact variable|Constant fact variables}} that does not change value after initialization.
 * New ways to pass {{Lang2|Terms|Arguments|arguments}}. Named, default and optional parameters and functor originals.
 * New attribute {{Lang2|Attributes|mandatoryOut|<vp>[mandatoryOut]</vp>}}.