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APL (named after the book A Programming Language) is a programming language developed in the 1960s by Kenneth E. Iverson. Its central datatype is the multidimensional array . It uses a large range of special graphic symbols [4] to represent most functions and operators, leading to very concise code.
- APL (Codepage)
The programming language APL uses a number of symbols,...
- APL syntax and symbols
APL syntax and symbols. This article contains APL source...
- APL (Codepage)
APL is an old but powerful programming language that uses symbols and vector operations to express algorithms. Learn why APL is worth learning, how it differs from other languages, and how to get started with examples and exercises.
TryAPL. Got a minute? — Try APL! APL is an array-oriented programming language that will change the way you think about problems and data. With a powerful, concise syntax, it lets you develop shorter programs that enable you to think more about the problem you're trying to solve than how to express it to a computer.
- Creating The APL Programming Language
- A Taste of APL
- How APL Was Implemented
- Applications of APL
- APL Praise and Criticism
- A Short Biography of Ken Iverson
- Bibliography
- Historical Source Code Releases
Iverson’s book “A Programming Language” 1uses a graphical notation that would have been difficult to directly use as a programming language for computers. He considered it an extension of matrix algebra, and used common mathematical typographic conventions like subscripts, superscripts, and distinctions based on the weight or font of characters. He...
APL is a concise high-level programming language that differs from most others developed in the 1960s in several respects: Order of evaluation:Expressions in APL are evaluated right-to-left, and there is no hierarchy of function precedence. For example, typing the expression 2×4+3 causes the computer to immediately type the resulting value 14 The v...
The first computer implementation of APL notation was a batch-oriented language interpreter written in FORTRAN in 1965 for the IBM 7090 mainframe computer, by Larry Breed at the IBM Research Center in Yorktown Heights NY and Philip Abrams, then a graduate student at Stanford University. The first interactive version was written soon after for the 7...
Even before it was a computer programming language, Iverson Notation was useful as a language for documenting algorithms for people. The classic example is the formal definition of the instruction-set architecture of the new IBM System/360 computer, which was published in an article in the IBM Systems Journal by Adin Falkoff, Ken Iverson, and Ed Su...
APL was not originally designed as a programming language. As Iverson said, With so many terse and unusual symbols, APL computer programs, like the mathematical notation that inspired it, has a conciseness and elegance many find appealing. APL attracts fanatic adherents. Alan Perlis (the first recipient of the ACM’s Turing Award, in 1966) was one: ...
Kenneth Eugene Iverson was born on December 17, 1920 on a farm near Camrose, Alberta, Canada. He was educated in rural one-room schools until the end of 9th grade, when he dropped out of school because it was the height of the Depression and there was work to do on the family farm. He later said the only purpose of continuing his schooling would ha...
K. E. Iverson, A Programming Language, John Wiley and Sons, Inc., 1962.Welcome to APL Wiki, 401 articles about APL that anyone can edit. See the navigational overview of content. APL is an array-oriented programming language. Its natural, concise syntax lets you develop shorter programs while thinking more about the problem you're trying to solve than how to express it to a computer.
APL (A Programming Language) is an array programming language based on a notation invented in 1957 by Kenneth E. Iverson while at Harvard University. It originated as an attempt to provide consistent notation for the teaching and analysis of topics related to the application of computers.
