我在页面上使用angularjs。我想过滤JSON对象中的值，以便不存在冗余。但是我没有找到任何方法可以从角度ng-repeat中获得唯一值。反正有做吗？

好的，这是有关该问题的一些描述。我有这种格式的JSON。我从服务中获取此JSON。因此，我们不能期望重复数据如何发生。

result = [
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        },      
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        },      
        {
            _id: "500005",
            subject: "Attend to the event",
            date: "2 Jan, 2013"
        },      
        {
            _id: "500065",
            subject: "Some task deadline",
            date: "20 Sep, 2013"
        },      
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        }
]

我希望输出JSON不包含重复的元素，这样我的输出将是这样的

result = [
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        },      
        {
            _id: "500005",
            subject: "Attend to the event",
            date: "2 Jan, 2013"
        },      
        {
            _id: "500065",
            subject: "Some task deadline",
            date: "20 Sep, 2013"
        }
]