Idris2/tests/idris2/basic/basic050/Ilc.idr

f : (Int -> Bool) -> Int
f p = case (p 0, p 1) of
        (False, False) => 0
        (False, True)  => 1
        (True , False) => 2
        (True , True)  => 4

il : Int
il = f $ \x => x > 0

lc : Int
lc = f $ \case 0 => True ; _ => False

ilc : Int
ilc = f (\case 0 => True; _ => False)
Have lambda-case available everywhere lambda is (#819) 2020-12-07 14:34:48 +03:00			`f : (Int -> Bool) -> Int`
			`f p = case (p 0, p 1) of`
			`(False, False) => 0`
			`(False, True) => 1`
			`(True , False) => 2`
			`(True , True) => 4`

			`il : Int`
[ breaking ] remove parsing of dangling binders (#1711) * [ breaking ] remove parsing of dangling binders It used to be the case that ``` ID : Type -> Type ID a = a test : ID (a : Type) -> a -> a test = \ a, x => x ``` and ``` head : List $ a -> Maybe a head [] = Nothing head (x :: _) = Just x ``` were accepted but these are now rejected because: * `ID (a : Type) -> a -> a` is parsed as `(ID (a : Type)) -> a -> a` * `List $ a -> Maybe a` is parsed as `List (a -> Maybe a)` Similarly if you want to use a lambda / rewrite / let expression as part of the last argument of an application, the use of `$` or parens is now mandatory. This should hopefully allow us to make progress on #1703 2021-08-10 21:24:32 +03:00			`il = f $ \x => x > 0`
Have lambda-case available everywhere lambda is (#819) 2020-12-07 14:34:48 +03:00
			`lc : Int`
			`lc = f $ \case 0 => True ; _ => False`

			`ilc : Int`
[ breaking ] remove parsing of dangling binders (#1711) * [ breaking ] remove parsing of dangling binders It used to be the case that ``` ID : Type -> Type ID a = a test : ID (a : Type) -> a -> a test = \ a, x => x ``` and ``` head : List $ a -> Maybe a head [] = Nothing head (x :: _) = Just x ``` were accepted but these are now rejected because: * `ID (a : Type) -> a -> a` is parsed as `(ID (a : Type)) -> a -> a` * `List $ a -> Maybe a` is parsed as `List (a -> Maybe a)` Similarly if you want to use a lambda / rewrite / let expression as part of the last argument of an application, the use of `$` or parens is now mandatory. This should hopefully allow us to make progress on #1703 2021-08-10 21:24:32 +03:00			`ilc = f (\case 0 => True; _ => False)`