A working lisp-like language interpreter with:

• ints, strings, bools, lists, recursive functions and variables
• global mutable refs
• some basic built-in functions including:
  • arithmetic operators
  • equality and order checking
  • head, tail, cons for lists
  • concat for lists and strings
  • throwing errors
  • printing to and reading from stdout
  • converting expressions to strings
  • evaluating strings
  • slurping files
  • setting and getting global mutable refs
  • if-then-else expressions
  • do-blocks

To see some examples, run:

(eval (slurp "example.bl"))