Skip to content

Reference

  • Language

    Syntax, literals, types, expressions, patterns, modules

  • Runtime

    Runners, CLI, execution flow

  • Internals

    Binary format, type representations

Core concepts

  • A project is a set of .lt files, organized as a tree of modules.
  • A program is compiled code with typed input and output.
  • A runner is an execution target (interpreter, DuckDB, PostgreSQL).
  • The binary format carries inputs and outputs across the runner boundary.

See also

  • Learn for the language guides.
  • Usage for task-oriented workflows.