Solutions from The Little Schemer book.
Typing in the functions every time author says "now write X".
Running them in racket.
~/.racketrc has
(require xrepl)
for extra capabilites.
Load file into the REPL with:
-> ,ld functions.rkt
Then run some examples against the functions as I write them:
-> (lat? '(1 2 3))
#t