使用Google搜索问题是程序员的必备技能，今天看到了一个帖子专门讲了十个Google搜索技巧，这里分享一下：
（文中英文也不难，我就不翻译了）
1/ Use quotes to force an exact-match search: "what is javascript"
2/ AND operator will return only results related to both terms: html AND css
3/ You can use the OR operator to get the results related to one of the search terms (javascript OR python) free course
4. The "-" operator will exclude results that contain a term or phrase: javascript -css
5/ You can use the (*) wildcards as placeholders, which will be replaced by any word or phrase. "how to start * in 6 months"
6/ Search inside a single website: site:http://freecodecamp.org
7/ You can also use a very useful feature that helps to find a specific file type. Super useful! filetype:pdf learn css
8/ Search for a range of numbers: ecmascript 2016..2018
9/ Use the `before` operator to return only results before a given date javascript before:2020
10/ Use the `after` operator to return only results after a given date web development after:2020
更多内容请见知识星球：
这里有 一个优质的C++学习圈 等你加入。