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[[File:Roger.jpg|thumb|right|At [[Dyalog '18]]]] | [[File:Roger.jpg|thumb|right|At [[Dyalog '18]]]] | ||
'''Roger Kwok Wah Hui''' (born 1953) is a computer scientist and co-developer of the programming language [[J]], and later [[Dyalog APL]]. | '''Roger Kwok Wah Hui''' (born 1953) is a computer scientist and co-developer of the programming language [[J]], and later [[Dyalog APL]]. He runs and maintains the Jsoftware website. | ||
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Hui's work was described at the APL85 conference in a paper, "DESIGN: A Financial Modelling System", written jointly with his supervisor, Fred Appleyard. The basic objects in the system were in "Direct Definition" ([[Ken Iverson|Iverson]], 1976, 1980), and [[Adin Falkoff|Falkoff]] and Iverson's The Design of APL was cited. Hui left Alberta Energy shortly after being promoted to a non-APL and non-programming position, and was out of work, and had no access to computers, from September 1985 to April 1986. This gave him plenty of time for intense study of Iverson's Rationalized APL (1983) and [[A Dictionary of APL|A Dictionary of the APL Language]], as it was then named. | [[File:RH.jpg|thumb|left|Roger Hui's Iverson Award]] | ||
== History == | |||
Hui's work was described at the APL85 conference in a paper, "DESIGN: A Financial Modelling System", written jointly with his supervisor, Fred Appleyard. The basic objects in the system were in "Direct Definition" ([[Ken Iverson|Iverson]], 1976, 1980), and [[Adin Falkoff|Falkoff]] and Iverson's The Design of APL was cited. Hui left Alberta Energy shortly after being promoted to a non-APL and non-programming position, and was out of work, and had no access to computers, from September 1985 to April 1986. This gave him plenty of time for intense study of Iverson's Rationalized APL (1983) and [[A Dictionary of APL|A Dictionary of the APL Language]], as it was then named. In 1996, Hui received the [[Iverson Award]] for for his work on the design, implementation, and commercial development of J. | |||
== Publications == | == Publications == | ||
=== APL conferences === | === APL conferences === | ||
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* [[APL85]]: Design: a financial modelling system. With Fred Appleyard. | * [[APL85]]: Design: a financial modelling system. With Fred Appleyard. | ||
* [[APL87]]: [https://www.jsoftware.com/papers/from.htm Some uses of { and }]. | * [[APL87]]: [https://www.jsoftware.com/papers/from.htm Some uses of { and }]. | ||
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* [[APL97]]: Mathematical roots of J. With [[Ken Iverson|Kenneth E. Iverson]]. | * [[APL97]]: Mathematical roots of J. With [[Ken Iverson|Kenneth E. Iverson]]. | ||
* [[APL99]]: [https://www.jsoftware.com/papers/sparse.htm Sparse arrays in J]. | * [[APL99]]: [https://www.jsoftware.com/papers/sparse.htm Sparse arrays in J]. | ||
</div> | |||
=== Dyalog user meetings === | === Dyalog user meetings === | ||
<div style="column-width:40em"> | |||
* [[Dyalog '08]] 05: [https://dyalog.tv/Dyalog08/?v=k8Wt5sDDzgI Performance Improvements in Dyalog: A Case Study] ([https://www.dyalog.com/uploads/conference/dyalog08/presentations/05_Hui_Performance materials]) | * [[Dyalog '08]] 05: [https://dyalog.tv/Dyalog08/?v=k8Wt5sDDzgI Performance Improvements in Dyalog: A Case Study] ([https://www.dyalog.com/uploads/conference/dyalog08/presentations/05_Hui_Performance materials]) | ||
* [[Dyalog '09]] 15: Complex Numbers Implementation Stories ([https://www.dyalog.com/uploads/conference/dyalog09/presentations/15_Hui_ComplexNumbers.ZIP materials]) | * [[Dyalog '09]] 15: Complex Numbers Implementation Stories ([https://www.dyalog.com/uploads/conference/dyalog09/presentations/15_Hui_ComplexNumbers.ZIP materials]) | ||
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* [[Dyalog '18]] D14: [https://dyalog.tv/Dyalog18/?v=IOWDkqKbMwk Inverted Tables] ([https://www.dyalog.com/uploads/conference/dyalog18/presentations/D14_Inverted_Tables.zip slides]) | * [[Dyalog '18]] D14: [https://dyalog.tv/Dyalog18/?v=IOWDkqKbMwk Inverted Tables] ([https://www.dyalog.com/uploads/conference/dyalog18/presentations/D14_Inverted_Tables.zip slides]) | ||
* [[Dyalog '20]] D07: [https://dyalog.tv/Dyalog20/?v=GgXS0zpboAM Rational Arithmetic] ([https://www.dyalog.com/uploads/conference/dyalog20/presentations/D07_Rational_Arithmetic.zip materials]) | * [[Dyalog '20]] D07: [https://dyalog.tv/Dyalog20/?v=GgXS0zpboAM Rational Arithmetic] ([https://www.dyalog.com/uploads/conference/dyalog20/presentations/D07_Rational_Arithmetic.zip materials]) | ||
</div> | |||
=== Other talks === | === Other talks === | ||
* Functional Conf 2017: [https://www.youtube.com/watch?v=EJONZpNA81s Tests, Derivations, Proofs] | * Functional Conf 2017: [https://www.youtube.com/watch?v=EJONZpNA81s Tests, Derivations, Proofs] | ||