Google is applying the same machine-driven techniques it uses to help consumers search the Web for text, images, video and books to help professional programmers as well as computer enthusiasts overcome stumbling blocks to writing code.
Searchers can seek out specific programming terms or computer languages and dive deep into compressed code to locate specific features. Users also can narrow a search to find software code based on specific licensing requirements, which is a big deal in warding off future patent litigation.
Google already has dozens of search engine types, including helping people look into your skylights with Google Earth. Fairly soon, it's going to be worth someone's while to invent a search engine solely to look through Google Search Engines.
Read the whole thing here.