See also: array programming [0] (apparently 1970s APL, on which J is based, didn't even have explicit for/while loops). Nowadays even common imperative languag

See also: array programming [0] (apparently 1970s APL, on which J is based, didn't even have explicit for/while loops). Nowadays even common imperative languages have higher-order functions, so I don't find it very exciting. Though still quite handy in R and similar languages where you deal with array-like structures almost all the time. [0] https://en.wikipedia.org/wiki/Array_programming https://en.wikipedia.org/wiki/Array_programming