Lodash uniqBy 多个数组？

【问题标题】：Lodash uniqBy multiple for array?Lodash uniqBy 多个数组？
【发布时间】：2016-05-23 14:43:10
【问题描述】：

我有数组：

[ [ '245', '0', '0.0100', '245,0,0.01' ],
  [ '245', '1', '0.0100', '245,1,0.01' ],
  [ '208', '0', '0.0300', '208,0,0.03' ],
  [ '208', '0', '0.0500', '208,0,0.05' ],
  [ '208', '0', '0.0600', '208,0,0.06' ] ]

我需要通过[0] 和[1] 单元格获取唯一数组像这样：

[ [ '245', '0', '0.0100', '245,0,0.01' ],
  [ '245', '1', '0.0100', '245,1,0.01' ],
  [ '208', '0', '0.0600', '208,0,0.06' ] ]

请帮忙/

【问题讨论】：

标签： javascript underscore.js lodash

【解决方案1】：

使用 lodhash uniqBy() 方法

var data = [
  ['245', '0', '0.0100', '245,0,0.01'],
  ['245', '1', '0.0100', '245,1,0.01'],
  ['208', '0', '0.0300', '208,0,0.03'],
  ['208', '0', '0.0500', '208,0,0.05'],
  ['208', '0', '0.0600', '208,0,0.06']
];

console.log(
  _.uniqBy(data, function(v) {
    return v[0] + ' ' + v[1];
  })
)

&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.13.0/lodash.js"&gt;&lt;/script&gt;

【讨论】：

@axon : 很高兴为您提供帮助 :)
我得到了 [ '208', '0', '0.0300', '208,0,0.03' ] 也许它可以为唯一元素指定反向？得到 ['208', '0', '0.0600', '208,0,0.06']
@axon : 反转数组并做同样的事情