34 lines
602 B
Text
34 lines
602 B
Text
|
|
||
|
|
precedence `+`:65
|
||
|
|
|
||
|
|
namespace nat
|
||
|
|
variable nat : Type.{1}
|
||
|
|
variable add : nat → nat → nat
|
||
|
|
infixl + := add
|
||
|
|
end
|
||
|
|
|
||
|
|
namespace int
|
||
|
|
using nat (nat)
|
||
|
|
variable int : Type.{1}
|
||
|
|
variable add : int → int → int
|
||
|
|
infixl + := add
|
||
|
|
variable of_nat : nat → int
|
||
|
|
coercion of_nat
|
||
|
|
end
|
||
|
|
|
||
|
|
using int
|
||
|
|
using nat
|
||
|
|
|
||
|
|
variables n m : nat
|
||
|
|
variables i j : int
|
||
|
|
|
||
|
|
check n + m
|
||
|
|
check i + j
|
||
|
|
check i + n
|
||
|
|
check i + n + n + n + n + n + n + n + n + n + n + n +
|
||
|
|
n + n + n + n + n + n + n + n + n + n + n + n +
|
||
|
|
n + n + n + n + n + n + n + n + n + n + n + n +
|
||
|
|
n + n + n + n + n + n + n + n + n + n + n + n
|
||
|
|
|
||
|
|
|