Ruby Array class include?()用法及代码示例

Array＃include？()：include？()是一个Array类方法，用于检查参数对象是否存在于数组中。

用法： Array.include?()

参数：obj-要查找的元素

返回：true-如果元素存在；否则为假

代码＃1：include？()方法的示例

# Ruby code for include?() method 
  
# declaring array 
a = [18, 22, 33, nil, 5, 6] 
  
# declaring array 
b = [1, 4, 1, 1, 88, 9] 
  
# declaring array 
c = [18, 22, nil, nil, 50, 6] 
  
# include? 
puts "include?:#{a.include?(5)}\n\n"
  
# include? 
puts "include?:#{b.include?(0)}\n\n"
  
# include? 
puts "include?:#{c.include?(nil)}\n\n"

输出：

include?:true

include?:false

include?:true

代码2：include？()方法的示例

# Ruby code for include?() method 
  
# declaring array 
a = ["abc", "nil", "dog"] 
  
# declaring array 
b = ["cow", nil, "dog"] 
  
# declaring array 
c = ["cat", nil, nil] 
  
# include? 
puts "include?:#{a.include?("cat")}\n\n"
  
# include? 
puts "include?:#{b.include?("nil")}\n\n"
  
# include? 
puts "include?:#{c.include?("cat")}\n\n"

输出：

include?:false

include?:false

include?:true

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注：本文由纯净天空筛选整理自mayank5326大神的英文原创作品 Ruby | Array class include?() operation。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。