Donkey, A Scheme Stepper

Scheme has been considered by many to be an ideal teaching language since it naturally conforms to mathematical intuition and inductive reasoning. But there have been few tools to facilitate the learning process and few good debuggers, only interpreters that produce answers without giving any intuition to how the Scheme expressions are evaluated. Donkey fulfills this role.

Donkey (built on the powerful MzScheme dialect) is an interactive Scheme debugger and editor. It provides:

• an easy-to-use interface for evaluating expressions
• the ability to step forward and backwards through evaluations one step at a time
• access to lists of global and local definitions
• the option to display shared structure in expressions
• temporary hiding of uninteresting parts of a computation

Getting Donkey

Documentation