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◈ALB Atlas

J Alive

J
KindProgramming language
Appeared1990
StatusAlive
CreatorIverson & Roger Hui
FamilyAPL

APL with ASCII — Iverson removed the custom character set and kept the array soul; tacit programming taken to its logical extreme.

Descended from APL

Ken Iverson's J (1990) — APL without the special characters — made ASCII the notation: tacit programming, rank, and the vocabulary Iverson perfected across four decades.\n\nIt remains the purest array language; q/kdb+ and the finance world run on Iversonian arrays.