9 lines
149 B
Text
9 lines
149 B
Text
section
|
|
variables {A : Type}
|
|
variables f : A → A → A
|
|
local infixl `+++`:10 := f
|
|
|
|
variables a b c : A
|
|
#check f a b
|
|
#check a +++ b
|
|
end
|