I was not even aware that there was a search engine dedicated for 
searching source code. Thanks again to StumbleUpon !
In fact after digging through Google search results, I got to know that this tool existed for quite some time 
About Koders
Koders.com is the leading search engine for open source code. Our source code optimized search engine provides developers with an easy-to-use interface to search for source code examples and discover new open source projects which can be leveraged in their applications.
Every month Koders generates a report on the keywords used in the search tool. It generates a list of top searched keyword, top solutions (i.e. downloaded code) and top projects.
On the enterprise side, Koders offer an “Enterprise Edition” which can be used by companies to index their internal codebase.
Koders also has a nice little Eclipse Plugin which helps you to search source code from within the Eclipse IDE. For more information check this demo.
There are plugins for NetBeans and Visual Studio as well ! Try it out 
Popularity: 4% [?]
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Dear Venu,
Thank You . I was looking for such a site. Your site is very informative.
With love.
– Rajeev
Thanks Rajeev…
Do subscribe to rss feeds or email so that u can keeb a tab on new posts..
I might as well not have WWW without StumbleUpon!
If you like Koders you should have a look on http://merobase.com
wow i’m impressed by merobase, though found it difficult to input the search keywords, the example queries were there for the rescue
Now, Koders search not support char ‘_’ in key word?
Thanks for the mention of Koders.com. We are also in beta testing of the “Pro” Edition. It’s like our Enterprise edition, but for smaller teams.