## (1)`添加一个元素` ~~~ sadd key member [member ...] ~~~ ## (2)`删除指定元素` ~~~ srem key member [member ...] ~~~ ## (3)`随机删除几个元素`count 默认为1 ~~~ spop key [count] ~~~ ## (4)`查看所有元素` ~~~ smembers key ~~~ ## (5)`随机获取一个元素` ~~~ srandmember key ~~~ ## (6) 判断集合中`是否含有`某个元素 是返回1 否返回0 ~~~ sismember key member ~~~ ## (7) 判断集合中有`元素总数` ~~~ scard key ~~~ ## (8) 元素从`一个集合移动到另一集合中` ~~~ smove source decrement member ~~~ ## (9)`交集`两个集合求交集 ~~~ sinter key [key...] ~~~ ## (10)`并集`两个集合求交集 ~~~ sunion key [key...] ~~~ ## (11)`差集`两个集合求交集 ~~~ sdiff key [key...] ~~~ ## (12)`保存交集`destination保存的键名 ~~~ sinterstore destination key [key...] ~~~ ## (13)`保存并集`destination保存的键名 ~~~ sunionstore destination key [key...] ~~~ ## (14)`保存差集`destination保存的键名 ~~~ sdiffstore destination key [key...] ~~~