lean2/tests/lean/let4.lean

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let b := true,
a : Int := b
in a
Variable vector : Type -> Nat -> Type
Variable const {A : Type} (n : Nat) (a : A) : vector A n
Check
let a := 10,
v1 := const a true,
v2 := v1
in v2
Show
let a := 10,
v1 : vector Bool a := const a true,
v2 : vector Bool a := v1
in v2
Check
let a := 10,
v1 : vector Bool a := const a true,
v2 : vector Bool a := v1
in v2
Check
let a := 10,
v1 : vector Bool a := const a true,
v2 : vector Int a := v1
in v2
Variable foo : (vector Bool 10) -> (vector Int 10)
Coercion foo
Check
let a := 10,
v1 : vector Bool a := const a true,
v2 : vector Int a := v1
in v2
SetOption pp::coercion true
Show
let a := 10,
v1 : vector Bool a := const a true,
v2 : vector Int a := v1
in v2