When I first started getting into object-oriented programming, I thought about things around the house I could model to help make more sense of what exactly OOP is. I personally feel that creating a deck of cards in ruby is what helped me get over the initial hump of wrapping my head around it.
Below, I wrote a bit of code that could be used as a base template for a deck of cards with aces high.
class Card
attr_reader :number, :suit, :value
def initialize(number, suit, value)
@number = number
@suit = suit
@value = value
end
end
class Deck
attr_reader :deck
def initialize
@deck = [
Card.new("2", "Hearts", 1),
Card.new("3", "Hearts", 2),
Card.new("4", "Hearts", 3),
Card.new("5", "Hearts", 4),
Card.new("6", "Hearts", 5),
Card.new("7", "Hearts", 6),
Card.new("8", "Hearts", 7),
Card.new("9", "Hearts", 8),
Card.new("10", "Hearts", 9),
Card.new("Jack", "Hearts", 10),
Card.new("Queen", "Hearts", 11),
Card.new("King", "Hearts", 12),
Card.new("Ace", "Hearts", 13),
Card.new("2", "Spades", 1),
Card.new("3", "Spades", 2),
Card.new("4", "Spades", 3),
Card.new("5", "Spades", 4),
Card.new("6", "Spades", 5),
Card.new("7", "Spades", 6),
Card.new("8", "Spades", 7),
Card.new("9", "Spades", 8),
Card.new("10", "Spades", 9),
Card.new("Jack", "Spades", 10),
Card.new("Queen", "Spades", 11),
Card.new("King", "Spades", 12),
Card.new("Ace", "Spades", 13),
Card.new("2", "Diamonds", 1),
Card.new("3", "Diamonds", 2),
Card.new("4", "Diamonds", 3),
Card.new("5", "Diamonds", 4),
Card.new("6", "Diamonds", 5),
Card.new("7", "Diamonds", 6),
Card.new("8", "Diamonds", 7),
Card.new("9", "Diamonds", 8),
Card.new("10", "Diamonds", 9),
Card.new("Jack", "Diamonds", 10),
Card.new("Queen", "Diamonds", 11),
Card.new("King", "Diamonds", 12),
Card.new("Ace", "Diamonds", 13),
Card.new("2", "Clubs", 1),
Card.new("3", "Clubs", 2),
Card.new("4", "Clubs", 3),
Card.new("5", "Clubs", 4),
Card.new("6", "Clubs", 5),
Card.new("7", "Clubs", 6),
Card.new("8", "Clubs", 7),
Card.new("9", "Clubs", 8),
Card.new("10", "Clubs", 9),
Card.new("Jack", "Clubs", 10),
Card.new("Queen", "Clubs", 11),
Card.new("King", "Clubs", 12),
Card.new("Ace", "Clubs", 13)
]
end
def mix
@deck.shuffle!
end
def deal
@deck.shift
end
def cards_left
@deck.length
end
end
# using the classes:
#create the deck and assign it a variable
new_full_deck = Deck.new
#shuffle the cards
new_full_deck.mix
#deal a card
new_full_deck.deal
=> <CARD OBJECT>
A deck of cards is an object that has many objects (cards) that are very familiar to our brains, so creating a deck of other card object really helped me understand OOP.
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