node.js - node_redis 获取 zrange withscores

Question

有谁知道我怎样才能通过 Node redis获得有分数的成员？我试过这样的事情:

client.ZRANGE(key, 0, -1, withscores, function(err, replies) {

});

谢谢。

Answer 1

这段代码看起来不错。查看以下链接以检索您想要的内容:

http://ricochen.wordpress.com/2012/02/28/example-sorted-set-functions-with-node-js-redis/

在此处添加该链接示例的代码，以防它被删除。

var rc=require('redis').createClient();
var _=require('underscore');

rc.zincrby('myset', 1, 'usera');
rc.zincrby('myset', 5, 'userb');
rc.zincrby('myset', 3, 'userc');
rc.zrevrange('myset', 0, -1, 'withscores', function(err, members) {
        // the resulting members would be something like
        // ['userb', '5', 'userc', '3', 'usera', '1']
        // use the following trick to convert to
        // [ [ 'userb', '5' ], [ 'userc', '3' ], [ 'usera', '1' ] ]
        // learned the trick from
        // http://stackoverflow.com/questions/8566667/split-javascript-array-in-chunks-using-underscore-js
    var lists=_.groupBy(members, function(a,b) {
        return Math.floor(b/2);
    });
    console.log( _.toArray(lists) );
});
rc.quit();