Array Language

A language whose central paradigm is treating whole arrays, not individual scalar values, as the basic unit operated on by its built-in functions and operators, so a single expression applies uniformly across an entire array without an explicit loop. Array programming is a real, established paradigm in computer science distinct from the imperative, functional, object-oriented and logic paradigms already covered by this scheme, most closely associated with Kenneth E. Iverson's APL and its direct descendants. Belongs here: APL, J and K, and any other language in the same lineage whose defining feature is this whole-array, loop-free operator style. Does not belong here: a language that merely provides array or matrix data types and library functions among many other features, such as a general-purpose scripting or numeric-computing language, filed under whichever paradigm bucket actually describes its own primary design.