True. I didn't have access to that APL, but read about it. And I didn't
grok tacit at the time. I do remember that they used alpha and omega for
left and right like x and y in J. At least, that's how I remember it.

On Thu, May 17, 2018 at 1:23 PM, Roger Hui <rogerhui.can...@gmail.com>
wrote:

> If it used alpha and omega then it's not tacit.  Tacit means no explicit
> mention of the function arguments; the term "tacit" was invented in 1991
> http://www.jsoftware.com/papers/TacitDefn.htm .  Tacit definition was
> first
> used APL\360, way back in 1966, as in +/ , but it was not recognized as
> tacit.  What made tacit fly were forks, first implemented in J in version
> 0.1.  In fact, tacit defn was implemented in J long before explicit defn.
>
>
>
> On Thu, May 17, 2018 at 12:14 PM, Don Guinn <dongu...@gmail.com> wrote:
>
> > Tacit came out first in APL. Used alpha and omega. First time I saw +/÷#
> > and thought "What is that??" (Sorry. Couldn't find rho.)
> >
> > On Thu, May 17, 2018, 11:24 AM David Lambert <b49p23t...@gmail.com>
> wrote:
> >
> > > "APL and J are conceptually similar. That is, one knowing one language
> > can
> > > easily pick up the other. "
> > > Verbs and rank thinking are easily transferred.  Tacit programming was
> > new
> > > and difficult for me, having used APL, APL2, and a VAX-VMS APL from
> DEC.
> > > .QQ is quote quad, .BX is box, etceteras.
> > > ----------------------------------------------------------------------
> > > For information about J forums see http://www.jsoftware.com/forums.htm
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm

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