lean4-htt/tests/lean/run/meta2.lean
2017-03-22 23:36:05 -07:00

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216 B
Text

import system.io
open io
meta definition foo : nat → nat
| a := nat.cases_on a 1 (λ n, foo n + 2)
#eval (foo 10)
meta definition loop : nat → io unit
| a := do put_str ">> ", print a, put_str "\n", loop (a+1)