Adám Brudzewsky

During APL86 at age 1

Adám Gall Brudzewsky is a lifelong APL programmer and the creator of Extended Dyalog APL and APLcart. An employee of Dyalog Ltd., Brudzewsky has made several contributions to the Dyalog APL language in addition to his work on components of the interpreter written in APL such as user commands.

Brudzewsky was taught APL by his father, and preferred it to mathematical notation as a student. He was hired by Dyalog Ltd. in May 2015, and worked closely with Dan Baronet. Brudzewsky quickly had an impact on the langauge, suggesting the Nest (⊆), or Enclose if Simple, primitive and later working to design Dyalog's array notation.

Since creating it in 2018, Brudzewsky maintains Extended Dyalog APL, a cover over Dyalog APL which uses APL models to extend existing primitives and implement new ones. The extensions include both functionality taken from other APLs and new functionality, and are sometimes adopted by Dyalog or dzaima/APL. The Constant operator appeared first in Extended Dyalog, as did the versions of Atop (⍤) and Over (⍥) later implemented by Dyalog (Brudzewsky's changes relative to Sharp APL were to exchange the glyphs, and remove the concept of close composition). dzaima/APL has adopted Extended Dyalog's Pair (⍮), Select (⊇), and Reverse Compose (⍛).

Brudzewsky is active on the APL Orchard as well as Stack Exchange's Code golf site. Because of his participation in these sites he was involved in Dyalog's hiring of interns Marinus Oosters, Will Robertson, and Rodrigo Girão Serrão, as well as employee Nathan Rogers.

Publications

• "TAO Axioms" (with Jay Foad and Roger Hui).
• APL style guide to improve readability and maintainability.
• APL tips for using Dyalog APL.

Dyalog user meetings

• Dyalog '15 D05: User Commands Update (with Dan Baronet)
• Dyalog '15 D10: MiServer UI Controls (slides) (with Dan Baronet)
• Dyalog '16 D04: Tools Group Update (with Brian Becker and Dan Baronet)
• Dyalog '17 D11: Literal Notation for Arrays and Namespaces (slides)
• Dyalog '17 D12: Try APL Online (slides) (with Brian Becker)
• Dyalog '17 D16: User Command Developments (slides) (with Michael Baas)
• Dyalog '18 D04: Array Notation Mk III (slides)
• Dyalog '18 D12: Jupyter Notebooks (slides)
• Dyalog '19 D05: Link (materials (zip file)) (with Morten Kromberg)
• Dyalog '19 U14: APLcart: A Novel Approach to Finding Your Way in APL (slides (zip file))

Dyalog webinars

No.	Date	Title
5	26 Oct 2017	APL CodeGolf Autumn Tournament
8	15 Feb 2018	Namespace-Directory Synchronisation (with Morten Kromberg )
9	22 Mar 2018	Total Array Ordering (with Jay Foad)
11	17 May 2018	Creating and managing your own User Commands
14	20 Sep 2018	Jupyter Notebook support for Dyalog APL
24	19 Mar 2020	Progressive set functions
27	14 May 2020	Language Features of Dyalog version 18.0 in Depth - Part 1
29	11 Jun 2020	Language Features of Dyalog version 18.0 in Depth - Part 2
31	9 Jul 2020	Language Features of Dyalog version 18.0 in Depth - Part 3
33	6 Aug 2020	Language Features of Dyalog version 18.0 in Depth - Part 4
35	3 Sep 2020	Language Features of Dyalog version 18.0 in Depth - Part 5

BAA webinars

No.	Date	Title
3	May 7th 2020	Meet the new APL Wiki
7	Jul 2nd 2020	aplcart.info turns 1