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google / clojure-turtle

A Clojure library that implements the Logo programming language in a Clojure context
Apache License 2.0
426 stars 41 forks source link

add undo functionality #4

Open echeran opened 8 years ago

echeran commented 8 years ago

add a function that can pop off the last commmand given to a turtle

ex: (clean) (forward 10) (undo) would be functionally equivalent to (clean)