一个很好的代码搜索引擎 Koders.com

www.koders.com The open source search engine at koders.com is optimized for code and is unlike a typical Internet search engine. First and foremost, only code files are indexed so developers don't waste time wading through non-code documents and information. Second, we use proprietary user heuristics to allow more popular code files to work their way to the top. Essentially, the more reuse a code file receives, the more likely it will appear higher in your search results. With that in mind, Koders provides various ways to restrict or expand search results by using special operators on your search terms. The following summarizes various ways to modify your search queries to increase your probability of relevancy. Search Syntax Note: With the exception of CamelCase, searches are case-insensitive. Searching for 'Xml' is the same as searching for 'XML' is the same as search for 'xML' etc. Search for phrases You can search for phrases such as "public event" by enclosing the search term in double quotes. CamelCase When using CamelCase, the terms are queried as separate terms. foreachtfffag would return search results as if you entered "for each tag". To search as a single term, keep everything lowercase -- foreachtag. Stemming: the * operator Terms can be stemmed with the * operator. The results will include all terms that start with the terms specified. For example, searching for 'xmlre*' will find files containing all words starting with 'xmlre' such as xmlreader, etc. Excluding terms: the - operator The results will include all files containing terms you specify and not the terms you have excluded. For example, searching 'xmlre* -xmlreader' will return files containing any term starting with xmlre, excluding files that contain xmlreader. Multiple terms are ANDed together The results will include all files containing all the terms you specify in the search box. This is known as a logical AND. For example, searching for 'smtp server' will find all files containing 'smtp' AND 'server'. Class Definitions Search for classes whose name contains <search term> For example, searching for 'cdef:parser' will return files with class names containing 'parser'. Method Definitions Search for methods whose name contains <search term> For example, searching for 'mdef:insert' will return files with method names containing 'insert' Interface Definitions Search for interfaces whose name contains <search term> For example, searching for 'idef:configuration' will return files with interface names containing 'configuration'. Compound Definitions Search for classes named 'tree' with a method named 'insert' For example, searching for 'cdef:tree mdef:insert' will return files with classes named 'tree' with a method named 'insert'