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|{{quote | "Humour is but the exercise of abstraction."|John Scholes. [http://dfns.dyalog.com/n_humour.htm ''Humour''], dfns workspace.}}
|{{quote | "Humour is but the exercise of abstraction."|John Scholes. [http://dfns.dyalog.com/n_humour.htm ''Humour''], dfns workspace.}}
|}
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John Morley Scholes (1948–2019) was a British computer scientist. His professional career was devoted to the development of APL. He was the first lead developer at what eventually became [[Dyalog Ltd.]] and kept working for the company until his death, since when he has dedicated himself to the art of writing perfect programs.<ref>[http://dfns.dyalog.com/n_beyond.htm ''The Beyond''], dfns workspace.</ref> He was the designer and implementer of [[Dyalog APL]]'s direct functions ([[dfn]]s, pronounced "dee funs"), a major distinguishing advance which was since copied by all new APLs; [[NARS2000]], [[GNU APL]], [[ngn/apl]], [[dzaima/APL]], etc. He also advocated for simplicity in computer systems.
'''John Morley Scholes''' (1948–2019) was a British computer scientist. His professional career was devoted to the development of APL. He was the first lead developer at what eventually became [[Dyalog Ltd.]] and kept working for the company until his death, since when he has dedicated himself to the art of writing perfect programs.<ref>[http://dfns.dyalog.com/n_beyond.htm ''The Beyond''], dfns workspace.</ref> He was the designer and implementer of [[Dyalog APL]]'s direct functions ([[dfn]]s, pronounced "dee funs"), a major distinguishing advance which was since copied by all new APLs; [[NARS2000]], [[GNU APL]], [[ngn/apl]], [[dzaima/APL]], etc. He also advocated for simplicity in computer systems.


In 2009, Scholes produced an explanatory video of his implementation of John Conway's "Game of Life". It has since gathered almost 200 000 views. He has also produced numerous, always well-received, presentation and papers on various subjects from the technical to the humorous.
In 2009, Scholes produced an explanatory video of his implementation of John Conway's "Game of Life". It has since gathered almost 200 000 views. He has also produced numerous, always well-received, presentation and papers on various subjects from the technical to the humorous.
== Publications ==
=== Dyalog user meetings ===
<div style="column-width:30em">
* [[Dyalog '06]] 04: Language Extensions
*  Dyalog '06  07: Functions as Results ([https://www.dyalog.com/uploads/conference/dyalog06/presentations/07_Scholes_FuncsAsResults materials])
* [[Dyalog '07]] 09: Version 12.0 Performance Enhancements (with [[Nic Delcros]])
*  Dyalog '07  10: An Investigation into Higher Level Operators
* [[Dyalog '08]] 06: Interpreter Performance (with [[Nic Delcros]])
*  Dyalog '08  08: [https://dyalog.tv/Dyalog08/?v=TwvgyNOtoK8 Journaled Files] ([https://www.dyalog.com/uploads/conference/dyalog08/presentations/08_SmithScholes_JournaledFiles.ppt materials]) (with [[Richard Smith]])
*  Dyalog '08  [https://dyalog.tv/Dyalog08/?v=SqTO9eZ4zg4 A Plea for Simplicity]
* [[Dyalog '09]] 19: [https://dyalog.tv/Dyalog09/?v=8ic0ctto1HU Complex Numbers]
*  Dyalog '09  C03: Introduction to D-Functions (dfns) ([https://dyalog.tv/Dyalog09/?v=OZARVrGQQho VIDEO 1 (124 mins)], [https://dyalog.tv/Dyalog09/?v=RQNSe9s_3eE VIDEO 2 (67 mins)])
* [[Dyalog '10]] P01: APL# – An APL for Microsoft .NET, Mono, Silverlight and Moonlight ([https://www.dyalog.com/uploads/conference/dyalog10/presentations/P01_KrombergScholesManktelow_APLSharp.pdf materials]) (with [[Morten Kromberg]] and Jonathan Manktelow)
*  Dyalog '10  P02: [https://dyalog.tv/APL2010/?v=Tq144y6DrME Unifying Traditional Functions and Dfns in APL#] ([https://www.dyalog.com/uploads/conference/dyalog10/presentations/P02_KrombergScholesManktelow_UnifyingFns.pdf materials]) (with [[Morten Kromberg]] and Jonathan Manktelow)
*  Dyalog '10  WS2: Introduction to Dfns ([https://dyalog.tv/APL2010/?v=-xsP154fE0o VIDEO 1 (67 mins)], [https://dyalog.tv/APL2010/?v=DkLxe9z1BKs VIDEO 2 (34 mins)])
* [[Dyalog '11]] D04: Introducing the Dyalog '11 Conference Edition (with [[Roger Hui]])
*  Dyalog '11  D06: Function Trains for Dyalog APL
*  Dyalog '11  D07: Closures
*  Dyalog '11  D08: [https://dyalog.tv/Dyalog11/?v=mZ_qkXb_tV8 APL#] ([https://www.dyalog.com/uploads/conference/dyalog11/presentations/D08_apl_sharp materials]) (with [[Morten Kromberg]] and Jonathan Manktelow)
*  Dyalog '11  D18: [https://dyalog.tv/Dyalog11/?v=bQlH49krwbk What is Functional Programming?] (with [[Roger Hui]])
* [[Dyalog '12]] D04: [https://dyalog.tv/Dyalog12/?v=KrrHYjPXc84 Potential Version 14.0 Language Features] ([https://www.dyalog.com/uploads/conference/dyalog12/presentations/D04_14.0 materials]) (with [[Roger Hui]])
*  Dyalog '12  D06: [https://dyalog.tv/Dyalog12/?v=L5rYVxPXV70 State-free Programming]
* [[Dyalog '13]] D09: [https://dyalog.tv/Dyalog13/?v=7-93GzDqC08 Train Spotting in Version 14.0] ([https://www.dyalog.com/uploads/conference/dyalog13/presentations/D09_Train_Spotting_in_Version_14.pdf slides])
*  Dyalog '13  D13: [https://dyalog.tv/Dyalog13/?v=3qGsCrkWT-4 Social Skills for Programmers]
* [[Dyalog '14]] D09: [https://dyalog.tv/Dyalog14/?v=pVrNT2lGUUo Distractions] ([https://www.dyalog.com/uploads/conference/dyalog14/presentations/D09_Distractions.pptx slides])
* [[Dyalog '15]] D16: [https://dyalog.tv/Dyalog15/?v=9KOto3xXS3c Future Operator Proposals: Cut, Under, Merge] ([https://www.dyalog.com/uploads/conference/dyalog15/presentations/D16_Future_Operator_Proposals.zip materials]) (with [[Roger Hui]])
* [[Dyalog '16]] D06: [https://dyalog.tv/Dyalog16/?v=vms4_Fpqmv8 New Primitive Functions and Operators] ([https://www.dyalog.com/uploads/conference/dyalog16/presentations/D06_New_Primitives_RH.zip materials], [https://www.dyalog.com/uploads/conference/dyalog16/presentations/D06_New_Primitives_JS.txt demo script]) (with [[Roger Hui]])
*  Dyalog '16  L04: [https://dyalog.tv/Dyalog16/?v=WsmS4XBFvH0 Dyalog Implementation – The Early Years] (with Stephen Taylor and [[Geoff Streeter]])
* [[Dyalog '17]] D04: [https://dyalog.tv/Dyalog17/?v=74xrZkVlns0 A Case Study – Recoding from Procedural to Denotative Style] ([https://www.dyalog.com/uploads/conference/dyalog17/presentations/D04_Recoding_from_Procedural_to_Denotative_Style.pdf slides])
*  Dyalog '17  D15: TAO – Total Array Ordering ([https://www.dyalog.com/uploads/conference/dyalog17/presentations/D15_TAO_of_Dyalog.zip materials]) (with [[Roger Hui]])
*  Dyalog '17  D17: Prefix Agreement: A Proposal for an Extension to the <source lang=apl inline>@</source> Operator ([https://www.dyalog.com/uploads/conference/dyalog17/presentations/D17_Extension_to_the_At_Operator.pdf slides])
* [[Dyalog '18]] D10: [https://dyalog.tv/Dyalog18/?v=y33XDD6ANt0 Dfns – Past, Present and Future] ([https://www.dyalog.com/uploads/conference/dyalog18/presentations/D10_Dfns_Past_Present_Future.pdf slides])
</div>


== External links ==
== External links ==
<div style="column-width:30em">


=== Websites ===
=== Websites ===


* [[wikipedia:John_M._Scholes_(computer_scientist)|Wikipedia: John Scholes]]
* [[wikipedia: John_M._Scholes_(computer_scientist)|Wikipedia: John Scholes]]
* [[Wikipedia: Direct functions]]
* [[Wikipedia: Direct functions]]
* [http://johnscholes.rip/ Memorial website]
* [http://johnscholes.rip/ Memorial website]
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* [https://www.youtube.com/watch?v=a9xAKttWgP4 Video: ''Game of Life'']
* [https://www.youtube.com/watch?v=a9xAKttWgP4 Video: ''Game of Life'']
* [https://www.youtube.com/watch?v=qSVR4Z3DA24 Video: ''A Plea for Simplicity'']
* [https://www.youtube.com/watch?v=DmT80OseAGs Video: ''A Sudoku Solver in APL'']
* [http://dfns.dyalog.com/downloads/howcomp.pdf Article: ''How to Write Computer Programs'']
* [http://dfns.dyalog.com/downloads/howcomp.pdf Article: ''How to Write Computer Programs'']
</div>


== References ==
== References ==
<references/>
<references/>
{{APL community}}[[Category:People|Scholes]]
{{APL community}}[[Category:People|Scholes]]

Revision as of 01:50, 14 January 2020

John Scholes

"Humour is but the exercise of abstraction."

John Scholes. Humour, dfns workspace.

John Morley Scholes (1948–2019) was a British computer scientist. His professional career was devoted to the development of APL. He was the first lead developer at what eventually became Dyalog Ltd. and kept working for the company until his death, since when he has dedicated himself to the art of writing perfect programs.[1] He was the designer and implementer of Dyalog APL's direct functions (dfns, pronounced "dee funs"), a major distinguishing advance which was since copied by all new APLs; NARS2000, GNU APL, ngn/apl, dzaima/APL, etc. He also advocated for simplicity in computer systems.

In 2009, Scholes produced an explanatory video of his implementation of John Conway's "Game of Life". It has since gathered almost 200 000 views. He has also produced numerous, always well-received, presentation and papers on various subjects from the technical to the humorous.

Publications

Dyalog user meetings

External links

Websites

Selected works

References

  1. The Beyond, dfns workspace.
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