This subtitle for _.isEmpty is misleading, it kind of imply that the lodash's version does not evaluate Set or Map (which is not true), see lodash isEmpty code here.

If the ❗️is for the Native implementation, it should put on top of the Native method.

_.isEmpty
Checks if value is an empty object or collection. ❗️Note

这篇文章并不在我的 underscore 源码解读计划中，直到 @pod4g 同学回复了我的 issue（详见 https://github.com/hanzichi/underscore-analysis/issues/2#issuecomment-227361035）。其实之前也有同学提出 isNaN 有 native 的 function，正好借此文辨析下几个常见的概念、方法，她们是 NaN，Number.NaN，isNaN，Number.isNaN，以及 underscore 中的 _.isNaN，顺便揪出了一个 BUG。

顺便安利，完整的 underscore 源码解读系列文章请戳 https://github.com/hanzichi/underscore-analysis

NaN & Number.NaN

ok，首先来了解下 NaN 和 Number.NaN 两个属性

Hi,

http://yonaba.github.io/Moses/doc/

From this page if you click on the Tutorial link on the left hand side you are taken to the tutorials page (http://yonaba.github.io/Moses/doc/manual/tutorial.md.html). The Section links in that page don't work. Then, if one goes back to the index on the left and click the moses module, the user gets a 404.

I tested this in both Chrome 69.0.3497.100