Redis命令-有序集合-zscore

原文

http://redis.io/commands/zscore

简介

Get the score associated with the given member in a sorted set.

获取有序集合中指定成员的分数。

语法

ZSCORE key member

版本

Available since 1.2.0.

自1.2.0版本可用。

时间复杂度

Time complexity: O(1)

描述

Returns the score of member in the sorted set at key.

返回有序集合中成员的分数。

If member does not exist in the sorted set, or key does not exist, nil is returned.

如果成员不存在，或者key不存在，返回nil。

返回值

Bulk string reply: the score of member (a double precision floating point number), represented as string.

Bulk string：成员的分数（双精度浮点数），表示为字符串。

例子

redis>  ZADD myzset 1 "one"
(integer) 1
redis>  ZSCORE myzset "one"
"1"
redis>