mirror of
https://github.com/idris-lang/Idris2.git
synced 2024-12-19 09:12:34 +03:00
33 lines
626 B
Idris
33 lines
626 B
Idris
||| Test extended record syntax
|
|
data NotZero : Nat -> Type where
|
|
Is : {n : Nat} -> NotZero (S n)
|
|
|
|
record Positive (n : Nat) {auto 0 pos : NotZero n} where
|
|
constructor Check
|
|
|
|
a : Positive 1
|
|
a = Check
|
|
|
|
b : Positive 2
|
|
b = Check
|
|
|
|
{- Will not type-check
|
|
c : Positive 0
|
|
-}
|
|
|
|
data KindOfString = ASCII | UTF
|
|
|
|
UTForASCII : KindOfString -> Type
|
|
UTForASCII UTF = String
|
|
UTForASCII ASCII = List Char --- Just to demonstrate
|
|
|
|
record FlexiString { default UTF k : KindOfString} where
|
|
constructor MkFlexiString
|
|
val : UTForASCII k
|
|
|
|
c : FlexiString
|
|
c = MkFlexiString "hello"
|
|
|
|
d : FlexiString {k = ASCII}
|
|
d = MkFlexiString ['h', 'i']
|