红宝石 |设置&方法
这是 Ruby 中的一个内置方法,它返回一个集合,其中包含两个集合中的公共元素。如果没有公共元素,则返回一个空集。
Syntax: s1.name & s2.name
Parameters: The function does not takes any parameter.
Return Value: It returns a new set that contains the common elements in both the sets.
示例 1 :
#Ruby program to illustrate the& method
#requires the set
require "set"
s1
= Set[1, 2, 4] s2 = Set[1, 2, 3]
#& method used
s3
= s1 & s2
#Prints the s3
puts s3
输出:
Set: {1, 2}
示例 2 :
#Ruby program to illustrate the& method
#requires the set
require "set"
s1
= Set[1, 2, 4] s2 = Set[6, 5, 3]
#& method used
s3
= s1 & s2
#Prints the s3
puts s3
输出:
参考:https://devdocs.io/ruby~2.5/SizedQueue#method-c-new