Newsgroups: comp.lang.apl
Path: watmath!watserv1!utgpu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!uunet.ca!geac!itcyyz!yrloc!hui
From: hui@yrloc.ipsa.reuter.COM (Roger Hui)
Subject: Re: Simple J question
Message-ID: <1992May21.071428.4198@yrloc.ipsa.reuter.COM>
Organization: Iverson Software Inc.
References: <1992May19.034553.10415@csus.edu>
Date: Thu, 21 May 92 07:14:28 GMT
Lines: 19

Emmett McLean writes:
>Also,( I am using the vax), I noticed that if I make a
>key stroke error and type
>
>%, a
>
>I tie up the machine and have to break to end my session.
>Is there anything I can do to get a prompt  once I have
>made this type-o?

This is a bug on J/VAX and is symptomatic of the incomplete implementation of 
_ (infinity).  (The first element of "a" is 0 and the reciprocal of 0 is _ .)  
The VAX is problematic in this regard because (a) there is no hardware support 
for _, and no C compiler support for it either (at least not the one I used); 
and (b) I do not have ready access to a machine.

------------------------------------
Roger Hui, Iverson Software Inc., 33 Major Street, Toronto, Ontario  M5S 2K9
Phone: (416) 925 6096;  Fax: (416) 488 7559
