mirror of
https://github.com/idris-lang/Idris2.git
synced 2024-12-13 17:25:29 +03:00
39 lines
836 B
Idris
39 lines
836 B
Idris
data Vect : Nat -> Type -> Type where
|
|
Nil : Vect Z a
|
|
(::) : a -> Vect k a -> Vect (S k) a
|
|
|
|
record MyDPair a p where
|
|
constructor MkMyDPair
|
|
dfst : a
|
|
dsnd : p dfst
|
|
|
|
cons : t -> MyDPair Nat (\n => Vect n t) -> MyDPair Nat (\n => Vect n t)
|
|
cons val xs
|
|
= { dfst := S (dfst xs),
|
|
dsnd := val :: dsnd xs } xs
|
|
|
|
cons' : t -> MyDPair Nat (\n => Vect n t) -> MyDPair Nat (\n => Vect n t)
|
|
cons' val
|
|
= { dfst $= S,
|
|
dsnd $= (val ::) }
|
|
|
|
record Stats where
|
|
constructor MkStats
|
|
height : Int
|
|
weight : Int
|
|
|
|
record Person where
|
|
constructor MkPerson
|
|
name : String
|
|
age, shoesize : Int
|
|
more : Stats
|
|
|
|
testPair : MyDPair Nat (\n => Vect n Int)
|
|
testPair = MkMyDPair _ [1,2,3,4,5]
|
|
|
|
testPerson : Person
|
|
testPerson = MkPerson "Fred" 1337 10 (MkStats 10 10)
|
|
|
|
grow : Person -> Person
|
|
grow = { more.height $= (+1) }
|