Stata code for part 2 (Chapter 11-17) of the book Causal Inference, by Miguel Hernán and James Robins.

:clock8: :hourglass: timeago.js is a tiny(~2.0kb) library used to format date with `*** time ago` statement. eg: '3 hours ago'. No dependency & localization & tiny.

A collection of *nix Sysadmin Test Questions and Answers. Test your knowledge and skills in different fields with these Q/A.

GitHub上最全的前端资源汇总（包括前端学习、前端开发资源、前端求职面试等）

这里收录比较实用的计算机相关技术书籍，可以在短期之内入门的简单实用教程、一些技术网站以及一些写的比较好的博文，欢迎Fork，你也可以通过Pull Request参与编辑。