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module AufgabeFFP7
where
type Buffer = (Int, String)
-- the empty buffer
--TODO empty :: Buffer
-- insert character before cursor
--TODO insert :: Char -> Buffer -> Buffer
-- delete character before cursor
--TODO delete :: Buffer -> Buffer
-- move cursor left one character
--TODO left :: Buffer -> Buffer
-- move cursor right one character
--TODO right :: Buffer -> Buffer
-- is cursor at left end?
--TODO atLeft :: Buffer -> Bool
-- is cursor at right end?
--TODO atRight :: Buffer -> Bool
--------------------------------------------------------------------------------
type BufferI = (String, String)
-- the empty buffer
--TODO emptyI :: BufferI
-- insert character before cursor
--TODO insertI :: Char -> BufferI -> BufferI
-- delete character before cursor
--TODO deleteI :: BufferI -> BufferI
-- move cursor left one character
--TODO leftI :: BufferI -> BufferI
-- move cursor right one character
--TODO rightI :: BufferI -> BufferI
-- is cursor at left end?
--TODO atLeftI :: BufferI -> Bool
-- is cursor at right end?
--TODO atRightI :: BufferI -> Bool
--------------------------------------------------------------------------------
--TODO retrieve :: BufferI -> Buffer
--------------------------------------------------------------------------------
--TODO: quicheck stuff
--------------------------------------------------------------------------------
--TODO ssfn ::
--TODO sap ::
--TODO minfree ::
--TODO removeDuplicates ::
--------------------------------------------------------------------------------
type Nat = [Int]
--TODO prop_ssfn_eq_minfree_a :: Nat -> Bool
--TODO prop_ssfn_eq_minfree_b :: Nat -> Property
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