23 lines
401 B
Text
23 lines
401 B
Text
section
|
|
variable {A : Type}
|
|
definition f (a b : A) := a
|
|
infixl ` ◀ `:65 := f
|
|
variables a b : A
|
|
check a ◀ b
|
|
end
|
|
|
|
inductive List (T : Type) : Type :=
|
|
| nil {} : List T
|
|
| cons : T → List T → List T
|
|
|
|
namespace List
|
|
section
|
|
variable {T : Type}
|
|
notation `[` l:(foldr `,` (h t, cons h t) nil) `]` := l
|
|
check [(10:num), 20, 30]
|
|
end
|
|
end List
|
|
|
|
open List
|
|
check [(10:num), 20, 40]
|
|
check (10:num) ◀ 20
|