特殊字符搜索网站 httpsymbolhound.com.

最近在学习makefile，想搜索一下 $@是啥意思，结果google由于忽略了特殊字符，结果啥也没找到，

后来在stackoverflow上看到了别人同样的问题

http://stackoverflow.com/questions/4685615/search-engine-for-special-characters

 

其中这个网站俺试了试还不错

SymbolHound is a search engine that doesn't ignore special characters. This means you can easily search for symbols like &, %, and π. We hope SymbolHound will help programmers find information about their chosen languages and frameworks more easily.

 

Example searches: === javascript      scala =>      lisp #'      ruby $$

 这个网站貌似主要索引了stackoverflow几个网站的资料，所以主要给俺们马农用用

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