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APL BUG: Past/Next 50 Years of APL, Morten Kromberg, Gitte Christensen @ CHM

Nov 19

In case you still have room on your calendar for Saturday afternoon:
(and even if you don't ... think about your memories of APL to send to )

The APL Bay Area Users' Group (The Northern California SIGAPL of the
ACM) will meet on the 19th of November to hear Dyalog APL's Gitte
Christensen recall the first 50 years of APL and Morten Kromberg
speculate on the next 50 years.

Saturday, 19 November 2016, 2:30 p.m.

at The Computer History Museum, Boole Room
1401 North Shoreline Blvd.
Mountain View, CA 94043

SAVED 1966-11-27 14.53.59 (GMT-8)
That timestamp from 50 years ago gives us a time to celebrate APL's
birthday. Morten Kromberg and Gitte Christensen will be here sooner,
but their visit will be a great occasion for those of us in the SF Bay
area to celebrate.

Gitte Christensen, "50 Years of APL":

An introduction to the early years of APL: the different applications
of APL are described in the context of changing conditions through the
last 50 years. The evolution of APL is outlined and the current state
established. In summary, this is a story of computing driven by

Morten Kromberg, "The second 50 years":

The first 50 years of APL (1966-2016) were a bumpy ride, the high
point probably being the early 1980's with personal computing and
hand-made corporate software on mainframes, and the low point the
proliferation of C++ based GUI frameworks in the 1990's which made
life all but impossible for domain experts trying to write

At the start of the second 50 years, the bad news is that the rest of
the world is starting to recognise and duplicate some of the key
strengths of the language, so the competition getting stronger from
dynamic languages like Python and Julia. The good news is that this
recognition brings some respectability, and although other languages
are adding array-oriented features pioneered by APL, there is still
little competition in terms of notation, where the APL family remains
unique as an executable but precise mathematical tool of thought.

In this talk, Morten will explore the opportunities that he sees for
APL in its second half-century.

The speakers

Gitte has a M.Sc in Biology with Mathematics, Physics and Chemistry
from the University of Copenhagen, but decided that APL programming
was more likely to provide her with a regular income. Gitte joined
I.P. Sharp Associates, where she met Morten, who had recently started
working for IPSA straight out of High School.

When IPSA was acquired by Reuters, Gitte and Morten formed Insight
Systems with a colleague, where they worked on porting APL systems
between platforms, and also provided middleware solutions to several
APL vendors. In 1994, Insight Systems merged with Adaytum Software,
with Morten becoming the CTO and Gitte the manager of the development
team and the Nordic sales team. Adaytum developed and marketed a
highly successful Business Intelligence solution based on Dyalog APL,
and was subsequently acquired by Cognos.

Since 2005 Gitte and Morten became CEO and CTO of Dyalog Ltd
( ), the fastest-growing vendor of APL
interpreters. At the beginning of this year, Morten handed the CTO
role over to Jay Foad and assumed the title of CXO of Dyalog, with
overall responsibility for User Experience. Further information on
recent presentations by Morten can be found at

More on the golden anniversary of APL is at .

This isn't completely set up, but at least pencil an APL BUG meeting on Saturday the 19th at 2:30 p.m. at the Computer History Museum into your calendar.
Morten Kromberg will be here then.

Of course his job is to update us on the latest and greatest features of Dyalog APL.

We'll also want to remember the 50th anniversary of )SAVE 1 CLEANSPACE.
SAVED 1966-11-27 15.53.59 (GMT-7)
There's more at which was assembled, at least in part, for Dyalog '16 in Glasgow in October.

"APL Blossom Time" is annotated at Ed Thelen's .
It may be heard at .
Perhaps it should be explained that the early history of APL was documented by the late Mike Montalbano in a song, "APL Blossom Time".
Curtis Jones

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