Lodash sortedUniqBy method
语法：
_.sortedUniqBy(array, [iteratee])
This method is like _.uniqBy except that it's designed and optimized for sorted arrays.
参数
array (Array) − The array to inspect.
[iteratee] (Function) − The iteratee invoked per element.
输出：
(Array) − Returns the new duplicate free array.
实例：
var _ = require('lodash');
var list = [1.1, 2.1, 2.2, 2.3];
var result = _.sortedUniqBy(list, Math.floor);
console.log(result);
Save the above program in
tester.js. Run the following command to execute this program.
命令：
输出：
