Tuesday, 7 June 2016

Haskell: Design deck of cards


Sample.hs
data Suit = Clubs | Diamonds | Hearts | Spades deriving (Show, Read, Eq, Ord, Enum)

data Value = Two | Three | Four | Five | Six | Seven | Eight | Nine | Ten | Jack | Queen | King | Ace  deriving (Show, Read, Eq, Ord, Enum)

data Card = Card {suit :: Suit, value :: Value} deriving Show


getAllCards :: [Card]
getAllCards = [Card suit value | suit <- [Clubs .. Spades], value <- [Two .. Ace]]

getCard :: Suit -> Value -> Card
getCard suit value = Card suit value

Prelude> :load Sample.hs
[1 of 1] Compiling Main             ( Sample.hs, interpreted )
Ok, modules loaded: Main.
*Main> 
*Main> getAllCards
[Card {suit = Clubs, value = Two},Card {suit = Clubs, value = Three},Card {suit = Clubs, value = Four},Card {suit = Clubs, value = Five},Card {suit = Clubs, value = Six},Card {suit = Clubs, value = Seven},Card {suit = Clubs, value = Eight},Card {suit = Clubs, value = Nine},Card {suit = Clubs, value = Ten},Card {suit = Clubs, value = Jack},Card {suit = Clubs, value = Queen},Card {suit = Clubs, value = King},Card {suit = Clubs, value = Ace},Card {suit = Diamonds, value = Two},Card {suit = Diamonds, value = Three},Card {suit = Diamonds, value = Four},Card {suit = Diamonds, value = Five},Card {suit = Diamonds, value = Six},Card {suit = Diamonds, value = Seven},Card {suit = Diamonds, value = Eight},Card {suit = Diamonds, value = Nine},Card {suit = Diamonds, value = Ten},Card {suit = Diamonds, value = Jack},Card {suit = Diamonds, value = Queen},Card {suit = Diamonds, value = King},Card {suit = Diamonds, value = Ace},Card {suit = Hearts, value = Two},Card {suit = Hearts, value = Three},Card {suit = Hearts, value = Four},Card {suit = Hearts, value = Five},Card {suit = Hearts, value = Six},Card {suit = Hearts, value = Seven},Card {suit = Hearts, value = Eight},Card {suit = Hearts, value = Nine},Card {suit = Hearts, value = Ten},Card {suit = Hearts, value = Jack},Card {suit = Hearts, value = Queen},Card {suit = Hearts, value = King},Card {suit = Hearts, value = Ace},Card {suit = Spades, value = Two},Card {suit = Spades, value = Three},Card {suit = Spades, value = Four},Card {suit = Spades, value = Five},Card {suit = Spades, value = Six},Card {suit = Spades, value = Seven},Card {suit = Spades, value = Eight},Card {suit = Spades, value = Nine},Card {suit = Spades, value = Ten},Card {suit = Spades, value = Jack},Card {suit = Spades, value = Queen},Card {suit = Spades, value = King},Card {suit = Spades, value = Ace}]
*Main> 
*Main> getCard Clubs King
Card {suit = Clubs, value = King}

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