The Concatative Language XY
Summary
The Concatative Language XY is a stack- and queue-based, continuation-passing language descended from Joy and K. It introduces a variety of core primitives, pattern notation, and a 'stackless' evaluation model; the article also notes its implementation in K and the XY 2.0 flatness rules. The content is of interest to language designers and developers exploring novel ways to structure computation and DSL design for automation tasks.