[Jprogramming] @: and capped fork

bob therriault bobtherriault at mac.com
Mon Dec 3 21:18:45 UTC 2012


I find myself using J602 for labs (the instructional value is still valid in most cases).

Cheers, bob
On 2012-12-03, at 1:06 PM, David Ward Lambert wrote:

> Sadly, the current j version 7 version of the "Object Oriented
> Programming" is broken.
> 
> Lab: Object Oriented Programming
> To advance the lab, press Ctrl-. in JHS or Ctrl-J in Gtk.
> On a tablet your mileage may vary.
> 
> ── (1 of 70) Overview ───────────────────────────────────────
> This lab is about Object Oriented Programming.
> 
> It covers OOP ideas and terminology and shows how to do it.
> )
> callback run error: psel_row_activated_3_
> |value error: wdforms
> |   fms=.    wdforms''
> 
> -----------------------------------
> 
> I was struck, by an earlier post in this thread, of differing
> impressions of j.  I see j as having been carefully crafted with names
> and symbols carefully chosen.  Were I to offer an introduction for
> intended users, say to a j club, the circle functions o. would be among
> the first things I'd show off as mnemonic, easy to learn.  Then again, I
> think the standard emacs key sequences make good sense.  My only gripe
> is that having been a Pascal programmer, and a Makefile writer, and a
> Mathematica user, I often write  noSpace:=  causing spelling error that
> gives me a devil of a time to spot.
> 
>> From: bob therriault <bobtherriault at mac.com>
>> To: programming at jsoftware.com
>> Subject: Re: [Jprogramming] @: and capped fork
>> Message-ID: <12873C55-CC7C-4EE2-98BF-8E63D61E58E5 at mac.com>
>> Content-Type: text/plain; CHARSET=US-ASCII
>> 
>> Alex,
>> 
>> I think I would point them towards first the 'Locales" lab and then
>> the "Object Oriented Programming" lab. I think that these two labs
>> would give object oriented people lots of information about how J can
>> be used as an object oriented language.
>> 
>> Cheers, bob
>>>>>> ...
> 
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