Path: utzoo!utgpu!watserv1!watmath!att!rutgers!ucsd!sdd.hp.com!samsung!cs.utexas.edu!rice!uw-beaver!cornell!rochester!pt.cs.cmu.edu!dsl.pitt.edu!pitt!willett!ForthNet
From: ForthNet@willett.pgh.pa.us (ForthNet articles from GEnie)
Newsgroups: comp.lang.forth
Subject: ANS TC Magnet for LOOPS, EXIT, Term.
Message-ID: <1659.UUL1.3#5129@willett.pgh.pa.us>
Date: 3 Sep 90 04:08:17 GMT
Organization: String, Scotch tape, and Paperclips.  (in Pgh, PA)
Lines: 22

Category 10,  Topic 16
Message 93        Fri Aug 31, 1990
D.RUFFER [Dennis]            at 13:33 EDT
 
From Elizabeth Rather, Chair, ANS X3J14 Technical Committee:

This is addressed to those who have been commenting extensively on our work on
UseNet and related boards.

3. Vectored execution:  ' and ['] provide execution tokens, and EXECUTE
executes them.  In between you can ! or , them into data structures as you
wish, and @ them when you need them.  An execution token is a cell wide, so
you can use CELLS or CELL+ to index through an array of tokens if you wish, to
get the effect of a "computed GOTO".  We have considered two other words,
PERFORM (equivalent to @ EXECUTE) and @EXECUTE (equivalent to @ ?DUP IF
EXECUTE THEN), both of which are in widespread practice, and as of B13 regard
either as too trivial an implementation to require.  Again, we consider it our
obligation to standardize capabilities (which @ EXECUTE is), and leave
optimizations to implementors.
-----
This message came from GEnie via willett through a semi-automated process.
Report problems to: uunet!willett!dwp or dwp@willett.pgh.pa.us