Ruby Array class drop_while()用法及代码示例

Array＃drop_while()：drop_while()是一种Array类方法，可根据特定条件从数组中删除元素。

用法： Array.drop_while()

参数：  block - condition to follow

返回： array after removing the elements based on the condition

代码＃1：drop_while()方法示例

# Ruby code for drop_while() method 
  
# declaring array 
a = [18, 22, 33, 100, 5, 6] 
  
# declaring array 
b = [1, 4, 1, 1, 88, 9] 
  
# drop 
puts "drop:#{a.drop_while {|x| x < 14}}\n\n"
  
# drop 
puts "drop:#{b.drop_while{|x| x != 1}}\n\n"

输出：

drop:[18, 22, 33, 100]

drop:[4, 88, 9]

代码2：drop_while()方法示例

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

输出：

drop:["dog"]

drop:[nil, "dog"]

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