lean4-htt/tests/compiler/partial.lean
2020-10-25 09:16:38 -07:00

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Text

set_option pp.implicit true
set_option pp.binder_types false
-- set_option trace.compiler.boxed true
partial def contains : String → Char → Nat → Bool
| s, c, i =>
if s.atEnd i then false
else if s.get i == c then true
else contains s c (s.next i)
def main : IO Unit :=
let s1 := "hello";
IO.println (contains s1 'a' 0) *>
IO.println (contains s1 'o' 0)