Pebble: A kernel language for modules and abstract data types

A small set of constructs can simulate a wide variety of apparently distinct features in modern programming languages. Using a kernel language called Pebble based on the typed lambda calculus with bindings, declarations, dependent types, and types as compile-time values, we show how to build modules, interfaces and implementations, abstract data types, generic types, recursive types, and unions. Pebble has a concise operational semantics given by inference rules.