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APL
A Programming Language

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general
history

general

nature: mathematical language

history: APL (A Programming Language) was published in the 1962 book A Programming Language by Kenneth E. Iverson and a subset was first released in 1964. The language APL was based on a notation that Iverson invented at Harvard University in 1957. APL was intended for mathematical work and used its own special character set. Particularly good at matrix manipulation. In 1957 it introduced the array. APL used a special character set and required special I/O devices (special keyboards, printer heads, etc.).

APL\360 implemented in 1964.

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