Ruby 数组类drop_while()操作

Array#drop_while() : drop_while()是一个数组类方法，它可以按照特定的条件从数组中删除元素。

语法。 Array.drop_while()

参数：block – 要遵循的条件

返回：根据条件删除元素后的数组

代码#1：drop_while()方法的例子

# 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()方法的例子

# 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"]