APL (A Programming Language) is a programming language centered on multidimensional array processing, developed by Kenneth E. Iverson at Harvard University in the early 1960s, first as a mathematical notation for teaching and later implemented as an executable computer language at IBM. APL is distinguished by its extensive use of a special, non-standard symbol set, requiring specialized keyboards or input methods, and by operators that act on entire arrays at once rather than requiring explicit loops.
Facts
First Released ParadigmArray, functional, structured, modular 2 SignificanceAn array based language that influenced spreadsheets, functional programming and computer math packages. 2 Classification
Typing Discipline FAQs
Was APL a working programming language when Kenneth Iverson first designed it?
It began as a mathematical notation in 1957 to 1960 and was first implemented as a subset called APL\360 in 1964.
No. Iverson designed APL at Harvard University between 1957 and 1960 as a notation for the concise expression of mathematical algorithms, not as something a computer could run. For many years the notation went unnamed, sometimes simply being called Iverson's Language, and it stayed unimplemented. A subset called APL\360 was finally implemented in 1964, which is when it became an executable language.
Connections
Base Language For
Direction correction: Dyalog APL is an implementation of the APL language, not the reverse.
Direction correction: GNU APL is an implementation of the APL language, not the reverse.
Direction correction: J was designed by Kenneth Iverson as a successor notation to APL, not the reverse.
Direction correction: K was designed by Arthur Whitney drawing on the APL array-language tradition, not the reverse.
Follows Typing Discipline
In Field
Source Wikipedia: APL (programming language)
Influenced
Nial infobox: "Influenced by: APL (programming language), Lisp (programming language)." en.wikipedia.org/wiki/Nial
Invented By
Source Wikidata: APL
Additional Source Wikipedia: Kenneth E. IversonInfobox: known_for
Source Wikidata: APL
Additional Source Lawrence M. Breed, WikipediaInfobox: known_for
Sources
1. Wikidata: APL
- Wikidata Q296187, resolved via en.wikipedia pageprops (wave rule R-L)
- Wikidata Q296187 P7078 (typing discipline)
View the Source2. Wikipedia: APL (programming language)
Wikimedia FoundationInfobox: year
November 27, 1966
Infobox: Paradigm
Array, functional, structured, modular
Article body, influence discussion
It has been an important influence on the development of concept modeling, spreadsheets, functional programming, and computer math packages.
In Field: Programming Language Theory, Lead
APL (named after the book A Programming Language) is a programming language developed in the 1960s by Kenneth E.
In Group: APL and Its Descendants, Lead
APL (named after the book A Programming Language) is a programming language developed in the 1960s by Kenneth E. Iverson.
View the Source Lawrence M. Breed, Wikipedia
Invented By: Lawrence M. Breed, Infobox: known_forQuote, Invented By: Lawrence M. Breed, Infobox: known_for
Implementation of Iverson Notation (APL) Scientific Time Sharing Corporation (cofounder)
Wikipedia: Kenneth E. Iverson
Wikimedia FoundationInvented By: Kenneth E. Iverson, Infobox: known_forQuote, Invented By: Kenneth E. Iverson, Infobox: known_for
Programming languages: APL, J
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