lean4-htt/tests/lean/run/coeIssues4.lean
2020-09-26 19:12:01 -07:00

35 lines
546 B
Text

new_frontend
def f : List Int → Bool := fun _ => true
def ex3 : IO Bool := do
let xs ← pure [1, 2, 3];
pure $ f xs -- Works
inductive Expr
| val : Nat → Expr
| app : Expr → Expr → Expr
instance : Coe Nat Expr := ⟨Expr.val⟩
def foo : Expr → Expr := fun e => e
def ex1 : Bool :=
f [1, 2, 3] -- Works
def ex2 : Bool :=
let xs := [1, 2, 3];
f xs -- Works
def ex4 :=
[1, 2, 3].map $ fun x => x+1
def ex5 (xs : List String) :=
xs.foldl (fun r x => r.push x) Array.empty
set_option pp.all true
#check foo 1
def ex6 :=
foo 1