红宝石 |设置+方法
+是 Ruby 中的一个内置方法,它返回一个集合,其中包含两个集合的所有元素。两个集合中的共同元素出现一次。 '+' 方法充当联合操作。
Syntax: s1.name + s2.name
Parameters: The function does not takes any parameter.
Return Value: It returns a new set that contains all the elements of both the set.
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, 4, 3}
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:
Set: {1, 2, 4, 6, 5, 3}
参考:https://devdocs.io/ruby~2.5/set#method-i-2B