Inspired by Ken Iverson’s paper “Notation as a Tool of Thought”, this podcast explores various aspects of notation, in the context of the APL programming language.

Richard YouTube is the media manager and an APL instructor at Dyalog Ltd, has taught APL at multiple schools, and created an online self-study course.

Adám YouTube is head of language design at Dyalog Ltd, launched the APL Orchard chat room and the APLcart code phrase search, and is the co-author of the APL Cultivations book.

Both are regular presenters at various APL events, and recurring panellists on the Array Cast podcast.

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27 January 2023

Processes and Structures


After establishing our new name, we look at graphical diagrams that implement the structure of a system, and compare to the evolution of Iverson Notation into today’s traditional user-defined functions in APL. We also discuss what aspects of that could be desirable in an integrated development environment.

Video (YouTube) ∙ Audio (download)

tags: interface, history