Mailing List Archive: 49091 messages
  • Home
  • Script library
  • AltME Archive
  • Mailing list
  • Articles Index
  • Site search

[REBOL] Re: Model hacking

From: lmecir:mbox:vol:cz at: 22-Jun-2001 22:44

> Inspired by the style of your "Evaluation" essay, this leads me > to define > > >> elementary?: func [x] [error? try [first x]] > >> composite?: func [x] [not elementary? x]
Now I know. Another one: 5) SYSTEM vs. USER -- Some types are predefined by REBOL and the user cannot create values of that type (e.g., op!) while other types can be created at will by the user's expressions (object! and function!) 6) CLOSED vs. OPEN -- Some types (logic! and datatype!) have a set-in-concrete set of possible values, while others are open-ended and new values may be created at will (function! and block!) 5) and 6) look like being "unifiable" LM