红宝石 |设置子集?函数
subset?()是 Ruby 中的一个内置方法,如果集合是给定集合的子集,则返回 true。
Syntax: s1_name.subset?(s2_name)
Parameters: The function takes a mandatory parameter with which it is ch
Return Value: It returns self.
示例 1 :
# Ruby program to illustrate
# the subset?() method
# requires the set
require "set"
s1 = Set[2, 12, 78, 10, 87, 98]
s2 = Set[2, 10, 87]
# reset method used
puts s2.subset?(s1)
输出:
true
示例 2 :
# Ruby program to illustrate
# the subset?() method
# requires the set
require "set"
s1 = Set[2, 12, 78, 10, 87, 98]
s2 = Set[1, 2, 3]
# reset method used
puts s2.subset?(s1)
输出:
false