Ruby 鲁比<&书信电报;(双小于)带有实例变量
我不确定这是如何有效的代码:Ruby 鲁比<&书信电报;(双小于)带有实例变量,ruby,Ruby,我不确定这是如何有效的代码: class Library def initialize(games) @games = games end def add_game(game) games << game end def games() @games end end games = ['WoW','SC2','D3'] lib = Library.new(games) puts lib.games lib.add_game('Ti
class Library
def initialize(games)
@games = games
end
def add_game(game)
games << game
end
def games()
@games
end
end
games = ['WoW','SC2','D3']
lib = Library.new(games)
puts lib.games
lib.add_game('Titan')
puts lib.games
类库
def初始化(游戏)
@游戏
结束
def添加_游戏(游戏)
游戏这个代码有点混乱。该行:
games << game
或者这个:
(self.games).<< game
(self.games)。它使用类实例变量,请查看您的代码:
class Library
def initialize(manygames)
@games = manygames
end
def add_game(game)
imlookingforclassinstancevariable << game
end
def imlookingforclassinstancevariable
@games #i'm the final storage of your array
end
end
games = ['WoW','SC2','D3']
lib = Library.new(games)
puts lib.imlookingforclassinstancevariable
lib.add_game('Titan')
puts lib.imlookingforclassinstancevariable
类库
def初始化(多个名称)
@游戏=许多游戏
结束
def添加_游戏(游戏)
我在寻找ClassInstanceVariable啊,这更有意义,Jim。非常感谢。或者games(),如果没有父母,它就更像是DSL了,而且是封装的,依我看。另外,试着在你上一次put lib.games
之后添加一个put games
,你就会明白为什么@games=games
应该是@games=games.dup
。为什么是“类实例变量”而不是“实例变量”?
(self.games).<< game
(self.games) << game
class Library
def initialize(manygames)
@games = manygames
end
def add_game(game)
imlookingforclassinstancevariable << game
end
def imlookingforclassinstancevariable
@games #i'm the final storage of your array
end
end
games = ['WoW','SC2','D3']
lib = Library.new(games)
puts lib.imlookingforclassinstancevariable
lib.add_game('Titan')
puts lib.imlookingforclassinstancevariable