A Haskell implementation of an interpreter of the lambda calculus.
To start a REPL, pull this repository, have Haskell stack installed and do the following:
$ stack build
$ stack test
$ stack exec lambda-exe
Lambda Calculus Interpreter!
λ: (\x.x) (\y.y y)
(λy.(y) (y))
A basic test suite is implemented and can run by
the usual stack test. The tests support a correct
implementation. However, they do not guarantee it.
Some day, when time is, it might be interesting to
implement the evaluator in a proof assistant.