Mark Morgan Lloyd wrote:
Sven Barth wrote:
On 25.02.2012 19:15, ik wrote:
Hello,
I found the following amazing lecture that present a new idea of a
development tool, that I think will interest you all:
http://vimeo.com/36579366
An interesting talk indeed. Thank you for sharing.
Agreed, very interesting (although I had to skip the last few minutes
due to other things happening). From a purely mechanical point of view
I'd be interested to know whether the coding examples were
fully-implemented, or if he was in effect miming to a prepared video.
Somebody else has mentioned incremental compilation: a number of years
ago there was something called Mystic Pascal that tried this, although I
never used it (I was in the throes of Modula-2 at the time) and it ended
up as a freebie on a cover disc. I've always felt that there might still
be something in it worth looking at...
To my surprise, I've managed to find a copy of this at
http://www.g7jjf.com/512/512-20.zip , I thought it had vanished completely.
I've not attempted to fire it up, but it appears to be aligned with TP1,
except that it is distinguished by the ability to evaluate expressions
immediately including where these are procedure calls with (simple?)
parameters. The IDE (such as they were in those days) also has a
timer/multitasking facility, onto which user-written procedures can be
hooked.
There might be limited capability for tweaking an executing procedure
on-the-fly by changing global variables, but obviously nothing as
sophisticated as what Bret Victor was proposing in that video.
I also found
http://www.megalextoria.com/usenet-archive/news050f1/b70/comp/lang/pascal/00000039.html
which suggests that Mystic Pascal failed to take off because the author
took orders for either it or a related product (JRT Pascal?) before it
was in a position to be shipped.
We were certainly aware of it and had it in our price list in the late
80s, and that implies that we actually had or were confident that we
could get stock. But I don't think we ever sold any, and it ended up
being shipped as shareware not long after.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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