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→Outside of APL: C++ and Go usage
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The notation <math>\iota_o(n)</math>, "Interval", was used in [[Iverson notation]] for the vector of the first <math>n</math> indices starting at [[index origin]] <math>o</math>. Both arguments were optional, with <math>n</math> being implied by [[conformability]] if omitted. It was adopted with the obvious alterations in [[APL\360]], and extended to a vector argument for [[nested array theory|nested]] APLs by [[NARS]] and for [[flat array theory|flat]] arrays by [[A+]]. | The notation <math>\iota_o(n)</math>, "Interval", was used in [[Iverson notation]] for the vector of the first <math>n</math> indices starting at [[index origin]] <math>o</math>. Both arguments were optional, with <math>n</math> being implied by [[conformability]] if omitted. It was adopted with the obvious alterations in [[APL\360]], and extended to a vector argument for [[nested array theory|nested]] APLs by [[NARS]] and for [[flat array theory|flat]] arrays by [[A+]]. | ||
== Outside of APL == | |||
The name "iota" has sometimes been used to indicate an increasing sequence of integers even in languages other than APL. In the [[wikipedia:C++|C++11]] standard library, <source lang=c++ inline>std::iota()</source> fills an iterator with such a sequence, and was named after the APL glyph.<ref>cppreference.com. [https://en.cppreference.com/w/cpp/algorithm/iota std::iota]. Retrieved 2020-04-28.</ref><ref>Rob Mayoff. [https://stackoverflow.com/a/9244949 Answer to "What does iota of std::iota stand for?"] on Stack Overflow. Retrieved 2020-04-28.</ref> The [[wikipedia:Go (programming language)|Go]] language also uses the name <source lang=go inline>iota</source> as a predeclared identifier which represents increasing integers: each time it is used within a single constant declaration its value will be one higher.<ref>The Go Programming Language Specification. [https://golang.org/ref/spec#Iota Iota]. 2020-01-14.</ref> | |||
== External links == | == External links == | ||