diff options
Diffstat (limited to 'Library/Stack.hs')
| -rw-r--r-- | Library/Stack.hs | 50 | 
1 files changed, 0 insertions, 50 deletions
diff --git a/Library/Stack.hs b/Library/Stack.hs deleted file mode 100644 index 99cd8e1..0000000 --- a/Library/Stack.hs +++ /dev/null @@ -1,50 +0,0 @@ -module Library.Stack ( -	Stack, -    empty, -    at, -    pop, -    (<:>), -    size, -    diff -    ) where - - -import Data.List - - -data Stack a = Stack [a] deriving (Eq) - - -instance Show a => Show (Stack a) where -    show (Stack x)   =   "Stack:\n" ++ intercalate "\n" (map (show) x) ++ "\n\n" - - -infixr 9 <:> - - -empty :: Stack a -empty = Stack [] - - -at :: Stack a -> Int -> Maybe a -at (Stack list) index = -    if (index < length list && index >= 0) -    then Just (list!!index) -    else Nothing - - -pop :: Int -> Stack a -> Stack a -pop n (Stack list) = Stack (drop n list) - - -(<:>) :: a -> Stack a -> Stack a -x <:> (Stack list) = Stack (x : list) - - -size :: Stack a -> Int -size (Stack list) = length list - - -diff :: (Eq a) => Stack a -> Stack a -> Stack a -diff (Stack one) (Stack two) = Stack (one \\ two) -  | 
