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== History == | == History == | ||
Leading axis theory was first developed by | Leading axis theory was first developed by employees of [[I. P. Sharp Associates]] including [[Ken Iverson]], [[Arthur Whitney]], and [[Bob Bernecky]] in the early 1980s: the [[Rank operator]] itself is attributed to Whitney, who invented it while travelling to the [[APL82]] conference. It was further developed by Iverson and [[Roger Hui]] when creating the [[J]] language in the 1990s and 2000s; the leading axis model and its various incompatibilities with APL had been a major reason to break with APL and create a new language. | ||
Leading axis theory was brought to [[Nested array theory|nested]] APLs by [[Dyalog APL]] in the 2010s after [[Dyalog Ltd.]] employed Hui. Working with [[Jay Foad]] and [[Morten Kromberg]], Hui designed and implemented versions of Rank and other J functionality compatible with Dyalog's nested arrays. | Leading axis theory was brought to [[Nested array theory|nested]] APLs by [[Dyalog APL]] in the 2010s after [[Dyalog Ltd.]] employed Hui. Working with [[Jay Foad]] and [[Morten Kromberg]], Hui designed and implemented versions of Rank and other J functionality compatible with Dyalog's nested arrays. | ||
{{APL features}}[[Category:Leading axis theory| ]] | {{APL features}}[[Category:Leading axis theory| ]] |