創建嵌套數組（2D）通過合併陣列

Question

可能重複：
Combination of two arrays in Ruby

Faces = "Two Three Four Five Six Seven Eight Nine Ten Jack Queen King Ace" 
Suits = "Spades Clubs Hearts Diamonds" 
Face = [] 
Face = Faces.split * 4 
Suits.split 

我要求採取suits.splitarray和13次互相喂服爲Face到創建一個2D數組，看起來像[["Two", "Spades"],["Three", "Spades"]... ["Ace", "Diamonds"]]

Answer 1

，張貼在由陽光鏈接的問題，您正在尋找product：

Faces.product Suits 

Answer 2

通常情況下，變量應該是在SCREAMING_SNAKE_CASEsnake_case和常量形式。很難說如果你想創建常量或變量。

您還可以使用%w{elements here}以更簡單的方式實例化您的陣列。

刪除documentation瞭解這裏發生了什麼。

faces = %w{Two Three Four Five Six Seven Eight Nine Ten Jack Queen King Ace} 
=> ["Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King", "Ace"] 
suites = %w{Spades Clubs Hearts Diamonds} 
=> ["Spades", "Clubs", "Hearts", "Diamonds"] 
faces.product(suites) 
=> [["Two", "Spades"], ["Two", "Clubs"], ["Two", "Hearts"], ["Two", "Diamonds"], ["Three", "Spades"], ["Three", "Clubs"], ["Three", "Hearts"], ["Three", "Diamonds"], ["Four", "Spades"], ["Four", "Clubs"], ["Four", "Hearts"], ["Four", "Diamonds"], ["Five", "Spades"], ["Five", "Clubs"], ["Five", "Hearts"], ["Five", "Diamonds"], ["Six", "Spades"], ["Six", "Clubs"], ["Six", "Hearts"], ["Six", "Diamonds"], ["Seven", "Spades"], ["Seven", "Clubs"], ["Seven", "Hearts"], ["Seven", "Diamonds"], ["Eight", "Spades"], ["Eight", "Clubs"], ["Eight", "Hearts"], ["Eight", "Diamonds"], ["Nine", "Spades"], ["Nine", "Clubs"], ["Nine", "Hearts"], ["Nine", "Diamonds"], ["Ten", "Spades"], ["Ten", "Clubs"], ["Ten", "Hearts"], ["Ten", "Diamonds"], ["Jack", "Spades"], ["Jack", "Clubs"], ["Jack", "Hearts"], ["Jack", "Diamonds"], ["Queen", "Spades"], ["Queen", "Clubs"], ["Queen", "Hearts"], ["Queen", "Diamonds"], ["King", "Spades"], ["King", "Clubs"], ["King", "Hearts"], ["King", "Diamonds"], ["Ace", "Spades"], ["Ace", "Clubs"], ["Ace", "Hearts"], ["Ace", "Diamonds"]] 

記住產品只用Ruby 1.9> =可用。