redis学习-五大数据类型-Set
2021/9/16 19:38:10
本文主要是介绍redis学习-五大数据类型-Set,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
Set
Set中的值是不能重复的,并且无序
127.0.0.1:6379> sadd myset one //set集合中添加元素 (integer) 1 127.0.0.1:6379> sadd myset two (integer) 1 127.0.0.1:6379> sadd myset three (integer) 1 127.0.0.1:6379> smembers myset //查看set集合中的元素 1) "three" 2) "one" 3) "two" 127.0.0.1:6379> sismember myset one //判断每一个值是否在set集合中 (integer) 1 127.0.0.1:6379> sismember myset four (integer) 0 127.0.0.1:6379> scard myset //返回set元素的个数 (integer) 3 127.0.0.1:6379> srem myset three //移除set中的指定元素 (integer) 1 127.0.0.1:6379> smembers myset 1) "one" 2) "two" ############## //随机数 127.0.0.1:6379> SMEMBERS myset 1) "one" 2) "two" 3) "four" 4) "six" 5) "three" 6) "five" 127.0.0.1:6379> SRANDMEMBER myset //随机获取一个元素 "four" 127.0.0.1:6379> SRANDMEMBER myset "five" 127.0.0.1:6379> SRANDMEMBER myset 2 1) "three" 2) "six" 127.0.0.1:6379> spop myset //随机移除一个元素 "five" 127.0.0.1:6379> SMEMBERS myset 1) "one" 2) "six" 3) "two" 4) "four" 5) "three" ################# //将一个指定的值移动到另一个set中 127.0.0.1:6379> smove myset myset2 one (integer) 1 127.0.0.1:6379> smove myset myset2 two (integer) 1 127.0.0.1:6379> SMEMBERS myset 1) "six" 2) "four" 3) "three" 127.0.0.1:6379> SMEMBERS myset2 1) "one" 2) "two" ################# //交集,并集,差集 127.0.0.1:6379> SMEMBERS set1 1) "a" 2) "c" 3) "b" 127.0.0.1:6379> SMEMBERS set2 1) "d" 2) "e" 3) "c" 127.0.0.1:6379> SDIFF set1 set2 //差集 1) "a" 2) "b" 127.0.0.1:6379> SINTER set1 set2 //交集 1) "c" 127.0.0.1:6379> SUNION set1 set2 //并集 1) "a" 2) "b" 3) "c" 4) "d" 5) "e"
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