我来自 Java界,因此我惊讶地发现这些阵列()。 <代码>contains(object) 返回bool。
这样做的正确方式——鲁比拉方式——是什么?
array.include?
如果某一物体是自私存在的(即,如果任何物体=物体),则以其他方式出现,即为回报。
a = [ "a", "b", "c" ]
a.include?("b") #=> true
a.include?("z") #=> false
http://分lib.rubyonrails.org/classes/Array.html#M000441"rel=“noreferer” 英文版
[1,2,3].include? 2
=> true
ruby-1.9.2-p0 > [1,2,3].include? 3
=> true
ruby-1.9.2-p0 > [1,2,3].include? 33
=> false
你可以这样做:
Array.index("ITEM")
如果结果是!
在这方面。
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