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https://github.com/idris-lang/Idris2.git
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75032a7164
* Emit warning for fixities with no export modifiers This is to help update all the existing code to program with explicit fixity export directives in preparation for the behavioral change where they will become private by default.
62 lines
1.0 KiB
Idris
62 lines
1.0 KiB
Idris
-- a mini prelude
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module Stuff
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public export
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data Bool = True | False
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public export
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not : Bool -> Bool
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not True = False
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not False = True
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public export
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data Maybe a = Nothing | Just a
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public export
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intToBool : Int -> Bool
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intToBool 0 = False
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intToBool x = True
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public export
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ifThenElse : Bool -> Lazy a -> Lazy a -> a
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ifThenElse True t e = t
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ifThenElse False t e = e
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public export
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data Nat = Z | S Nat
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public export
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fromInteger : Integer -> Nat
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fromInteger x = ifThenElse (intToBool (prim__eq_Integer x 0))
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Z (S (fromInteger (prim__sub_Integer x 1)))
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public export
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plus : Nat -> Nat -> Nat
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plus Z y = y
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plus (S k) y = S (plus k y)
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export infixr 5 ::
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public export
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data List a = Nil | (::) a (List a)
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public export
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data Eq : a -> b -> Type where
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Refl : (x : a) -> Eq x x
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public export
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data Unit = MkUnit
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public export
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data Pair : Type -> Type -> Type where
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MkPair : {0 a, b : Type} -> a -> b -> Pair a b
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public export
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the : (0 a : Type) -> a -> a
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the _ x = x
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public export
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id : a -> a
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id x = x
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