Ruby 数组的delete_if()操作

Array#delete_if() : delete_if() 是一个Array类方法，它可以删除满足块条件的数组元素。

语法： Array.delete_if()

参数: block – 删除元素的条件。

返回:删除元素后的数组。

代码 #1 : delete_if()方法的例子

# Ruby code for delete_if() method
   
# declaring array
a = [18, 22, 33, 23, 5, 6]
   
# declaring array
b = [1, 4, 1, 1, 88, 9]
   
# declaring array
c = [18, 22, 12, 24, 50, 6]
   
# delete
puts "delete : #{a.delete_if{|x| x < 1}}\n\n"
   
# delete
puts "delete : #{b.delete_if{|b| b==1}}\n\n"

输出:

delete : [18, 22, 33, 23, 5, 6]

delete : [4, 88, 9] 

代码 #2 : delete_if()方法的例子

# Ruby code for delete_if() method
   
# declaring array
a = ["abc", "geeks", "dog"]
   
# declaring array
b = ["cow", "1", "dog"]
   
   
# delete
puts "delete : #{a.delete_if{|x| x != "dog"}}\n\n"
   
# delete
puts "delete : #{b.delete_if{|b| b=="1"}}\n\n"

输出:

delete : ["dog"]

delete : ["cow", "dog"]