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                # 118 Redis的集合操作 * **添加元素** ```text 語法: sadd key member[member...] 示例: # 向a集合中添加1、2、3、4、5、6 sadd a 1 2 3 4 5 6 ``` * **查看元素** ```text 語法: smembers key 示例: # 查看a集合中元素 smembers a ``` * **移除元素** ```text 語法: srem key members[members...] 示例: # 從a集合中移除1、2元素 srem a 1 2 ``` * **查看集合中的元素個數** ```text 語法: scard a 示例: # 查看a集合有幾個元素 scard a ``` * **獲取多個集合的交集** ```text 語法: sinter key[key...] 示例: # 返回a、b集合的交集 sinter a b ``` * **獲取多個集合的差集** ```text 語法: sdiff key[key...] 示例: # 返回得到集合b在集合a中沒有的元素 sdiff b a ``` * **獲取多個集合的并集** ```text 語法: sunion key[key...] 示例: # 返回得到a和b集合的并集 sunion a b ```
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