Why doesn’t Google use Courgette for Android updates

diff()google

Google has an advanced diff tool specifically designed for compiled binaries called Courgette.

Is there any reason why they wouldn't use this in Android and the Google Play Store to download updates? In my basic understanding of Java, it seems like it shouldn't be any more difficult (perhaps even easier?) to create 'diffs' like this because of Java's "bytecode" nature. Am I wrong? Are there any security reasons?

Note: I know that unless someone from Google responds, we won't know for sure. But I'm asking for any obvious reasons – I'm an Android developer and sometimes get notes from people complaining about frequent updates, so it is somewhat relevant to me. 🙂

Best Answer

Simplicity.

Incremental updates have the same problems as incremental backups; you must apply all of the increments in order from the last complete installation. It becomes impractical to do this forever; eventually everyone will have to get a complete update. Otherwise, you wind up selling a program that requires n incremental updates to get it current (where n is some arbitrarily large number, say, more than five).

From the store's point of view, it's easier just to transport the entire updated installation to the device than it is to track incremental revisions.

Remember, there are folks at the stores that vet these applications (especially at Apple); they must also apply all of the incremental updates before they can validate, and that's a pain in the ass. One installation, one thing to evaluate and keep track of.

Related Solutions

Database – the datastore used by Google for Google Instant

This is probably the closest you will get to an answer. Without talking to someone who actually worked on the project. Or more information is released to the public.

The link above contains this answer. It would have been hard to get point across without images. I would appreciate if you give the original poster up votes as well if you found this answer useful.

UPDATE: Google have just published a blog article called Google Instant, behind the scenes. It's an interesting read, and obviously related to this question. You can read how they tackled the extra load (5-7X according to the article) on the server-side, for example. The answer below examines what happens on the client-side:

Examining with Firebug, Google is doing an Ajax GET request on every keypress:

enter image description here

I guess it's working the same way as the auto completion. However this time, it also returns the search results of the partially complete search phrase in JSON format.

Examining one of the JSON responses while typing "Stack Overflow":

enter image description here

We can see that the JSON response contains the content to construct the search results as we type.

The formatted JSON responses look something like this:

{
    e: "j9iHTLXlLNmXOJLQ3cMO",
    c: 1,
    u: "http://www.google.com/search?hl\x3den\x26expIds\x3d17259,24472,24923,25260,25901,25907,26095,26446,26530\x26sugexp\x3dldymls\x26xhr\x3dt\x26q\x3dStack%20Overflow\x26cp\x3d6\x26pf\x3dp\x26sclient\x3dpsy\x26aq\x3df\x26aqi\x3dg4g-o1\x26aql\x3d\x26oq\x3dStack+\x26gs_rfai\x3d\x26pbx\x3d1\x26fp\x3df97fdf10596ae095\x26tch\x3d1\x26ech\x3d1\x26psi\x3dj9iHTO3xBo2CONvDzaEO12839712156911",
    d: "\x3clink rel\x3dprefetch href\x3d\x22https://stackoverflow.com/\x22\x3e\x3cscript\x3eje.pa(_loc, \x27rso\x27, \x27\\x3c!--m--\\x3e\\x3clink rel\\x3dprefetch href\\x3d\\x22https://stackoverflow.com/\\x22\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22https://stackoverflow.com/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNERidL9Hb6OvGW93_Y6MRj3aTdMVA\\x27,\\x27\\x27,\\x270CBYQFjAA\\x27)\\x22\\x3e\\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3eA language-independent collaboratively edited question and answer site for programmers.\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3e\\x3cb\\x3estackoverflow\\x3c/b\\x3e.com/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:U1GC2GYOToIJ:stackoverflow.com/+Stack+Overflow\\x26amp;cd\\x3d1\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNFfKMag7Tq8CMbbfu8Gcj_GjukTbA\\x27,\\x27\\x27,\\x270CBgQIDAA\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:stackoverflow.com/+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CBkQHzAA\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3cbr\\x3e\\x3ctable class\\x3dslk style\\x3d\\x22border-collapse:collapse;margin-top:4px\\x22\\x3e\\x3ctr\\x3e\\x3ctd style\\x3d\\x22padding-left:14px;vertical-align:top\\x22\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22https://stackoverflow.com/questions\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNHmP78gEctJKvBrydP2c52F_FEjvA\\x27,\\x27\\x27,\\x270CBoQqwMoADAA\\x27)\\x22\\x3eQuestions\\x3c/a\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22https://stackoverflow.com/questions/ask\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNGZF-qwWVTZOWPlr4vgSA7qB64LLQ\\x27,\\x27\\x27,\\x270CBsQqwMoATAA\\x27)\\x22\\x3eAsk Question\\x3c/a\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22https://stackoverflow.com/users/135152/omg-ponies\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNE9zo6Qi_AM1bjmPGeMGfbnPi3niA\\x27,\\x27\\x27,\\x270CBwQqwMoAjAA\\x27)\\x22\\x3eOMG Ponies\\x3c/a\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22http://careers.stackoverflow.com/\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNEaqlBrfDcc1gdPZ6dgthff0s5WmA\\x27,\\x27\\x27,\\x270CB0QqwMoAzAA\\x27)\\x22\\x3eCareers\\x3c/a\\x3e\\x3c/div\\x3e\\x3ctd style\\x3d\\x22padding-left:14px;vertical-align:top\\x22\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22https://stackoverflow.com/about\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNEqgPttrXj3r4o3TZHX5WaWvFe1HQ\\x27,\\x27\\x27,\\x270CB4QqwMoBDAA\\x27)\\x22\\x3eAbout\\x3c/a\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22https://stackoverflow.com/faq\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNF3X3eRc0RsxYynXZhhbyYkuKWZ5g\\x27,\\x27\\x27,\\x270CB8QqwMoBTAA\\x27)\\x22\\x3eThe FAQ\\x3c/a\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22http://blog.stackoverflow.com/\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNG7KphjK6RuC5cj-6U5jeuvipt5dg\\x27,\\x27\\x27,\\x270CCAQqwMoBjAA\\x27)\\x22\\x3eBlog\\x3c/a\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dsld\\x3e\\x3ca class\\x3dsla href\\x3d\\x22https://stackoverflow.com/users\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x271\\x27,\\x27AFQjCNFfN_wcGm4HE5XpDxvcH4bIrkv2dw\\x27,\\x27\\x27,\\x270CCEQqwMoBzAA\\x27)\\x22\\x3eUsers\\x3c/a\\x3e\\x3c/div\\x3e\\x3ctr\\x3e\\x3ctd colspan\\x3d2 style\\x3d\\x22padding-left:14px;vertical-align:top\\x22\\x3e\\x3cdiv style\\x3d\\x22padding-top:6px\\x22\\x3e\\x3ca class\\x3dfl href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3d+site:stackoverflow.com+Stack+Overflow\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CCIQrAM\\x22\\x3eMore results from stackoverflow.com\\x26nbsp;\\x26raquo;\\x3c/a\\x3e\\x3c/div\\x3e\\x3c/table\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22https://stackoverflow.com/questions\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x272\\x27,\\x27AFQjCNHmP78gEctJKvBrydP2c52F_FEjvA\\x27,\\x27\\x27,\\x270CCUQFjAB\\x27)\\x22\\x3eHottest Questions - 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    e: "j9iHTLXlLNmXOJLQ3cMO",
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    u: "http://www.google.com/search?hl\x3den\x26expIds\x3d17259,24472,24923,25260,25901,25907,26095,26446,26530\x26sugexp\x3dldymls\x26xhr\x3dt\x26q\x3dStack%20Overflow\x26cp\x3d6\x26pf\x3dp\x26sclient\x3dpsy\x26aq\x3df\x26aqi\x3dg4g-o1\x26aql\x3d\x26oq\x3dStack+\x26gs_rfai\x3d\x26pbx\x3d1\x26fp\x3df97fdf10596ae095\x26tch\x3d1\x26ech\x3d1\x26psi\x3dj9iHTO3xBo2CONvDzaEO12839712156911",
    d: "\x3cscript\x3eje.pa(_loc, \x27rso\x27, \x27\\x3c!--m--\\x3e\\x3cli class\\x3dg style\\x3d\\x22margin-left:16px\\x22\\x3e\\x3ch3 class\\x3d\\x22r hcw\\x22\\x3e\\x3ca href\\x3d\\x22http://blog.stackoverflow.com/category/podcasts/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x275\\x27,\\x27AFQjCNGnAJSxUa4GLcg-E7PNvIFmPC53gQ\\x27,\\x27\\x27,\\x270CDEQFjAE\\x27)\\x22\\x3epodcasts - Blog – \\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s hc\\x22\\x3eJoel and Jeff sit down with our new community coordinator, Robert Cartaino, to record a “bonus” podcast discussing the future of \\x3cem\\x3eStack Overflow\\x3c/em\\x3e and Stack \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3eblog.\\x3cb\\x3estackoverflow\\x3c/b\\x3e.com/category/podcasts/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:JT0sWmmtiAEJ:blog.stackoverflow.com/category/podcasts/+Stack+Overflow\\x26amp;cd\\x3d5\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x275\\x27,\\x27AFQjCNErCiLBch55HA8i5BAdChcmQYH8nw\\x27,\\x27\\x27,\\x270CDMQIDAE\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:blog.stackoverflow.com/category/podcasts/+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CDQQHzAE\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://itc.conversationsnetwork.org/series/stackoverflow.html\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x276\\x27,\\x27AFQjCNHG9l1PMbilYkhohNFuj3g6ce1LuA\\x27,\\x27\\x27,\\x270CDUQFjAF\\x27)\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3eJoel and Jeff sit down with our new community coordinator, Robert Cartaino, to discuss the future of \\x3cem\\x3eStack Overflow\\x3c/em\\x3e and Stack Exchange 2.0. \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3eitc.conversationsnetwork.org/series/\\x3cb\\x3estackoverflow\\x3c/b\\x3e.html\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:8MkFpx7D4wYJ:itc.conversationsnetwork.org/series/stackoverflow.html+Stack+Overflow\\x26amp;cd\\x3d6\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x276\\x27,\\x27AFQjCNFP62Bg_o2kaz3jzXxzsrTs_7RdNA\\x27,\\x27\\x27,\\x270CDcQIDAF\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:itc.conversationsnetwork.org/series/stackoverflow.html+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CDgQHzAF\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://support.microsoft.com/kb/145799\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x277\\x27,\\x27AFQjCNHzyj5rHEX7IiyFWnP0ziE3B32rGg\\x27,\\x27\\x27,\\x270CDkQFjAG\\x27)\\x22\\x3eHow to Troubleshoot Windows Internal \\x3cem\\x3eStack Overflow\\x3c/em\\x3e Error Messages\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3eThis article lists steps to help you troubleshoot problems with \\x3cem\\x3estack overflow\\x3c/em\\x3e errors in  Windows. Stacks are reserved memory that programs use to process \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3esupport.microsoft.com/kb/145799\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:ECO9ORCsraAJ:support.microsoft.com/kb/145799+Stack+Overflow\\x26amp;cd\\x3d7\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x277\\x27,\\x27AFQjCNHYsox9EW1Ye9Nn2G6WQzEpJDOzcw\\x27,\\x27\\x27,\\x270CDsQIDAG\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:support.microsoft.com/kb/145799+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CDwQHzAG\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://stackoverflow.carsonified.com/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x278\\x27,\\x27AFQjCNHcEPoch5soLj2CpLpRfnW-Z2-aLw\\x27,\\x27\\x27,\\x270CD0QFjAH\\x27)\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e DevDays » Home\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e Dev Days is run by Carsonified, so please give us a shout if you need anything or are interested in sponsoring the event. \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3e\\x3cb\\x3estackoverflow\\x3c/b\\x3e.carsonified.com/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:uhl8NPgikN0J:stackoverflow.carsonified.com/+Stack+Overflow\\x26amp;cd\\x3d8\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x278\\x27,\\x27AFQjCNFf9Vl5L3FaQGPapUpIFw5gqVUCnA\\x27,\\x27\\x27,\\x270CD8QIDAH\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:stackoverflow.carsonified.com/+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEAQHzAH\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://stackoverflow.org/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x279\\x27,\\x27AFQjCNF-YrPvTLTJlFFDJrJE0cjGdlOpbg\\x27,\\x27\\x27,\\x270CEEQFjAI\\x27)\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e.org\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3e\\x3cem\\x3eStackOverflow\\x3c/em\\x3e.org began as the merging of two ideas that have been kicking around in my head for years. First, I wanted a dorky programming-related domain \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3e\\x3cb\\x3estackoverflow\\x3c/b\\x3e.org/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:u0dIlJW-XMYJ:stackoverflow.org/+Stack+Overflow\\x26amp;cd\\x3d9\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x279\\x27,\\x27AFQjCNHcJcV2QVybr6voztyPwHCrNOOD1w\\x27,\\x27\\x27,\\x270CEMQIDAI\\x27)\\x22\\x3eCached\\x3c/a\\x3e - \\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3drelated:stackoverflow.org/+Stack+Overflow\\x26amp;tbo\\x3d1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEQQHzAI\\x22\\x3eSimilar\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\\x3c!--m--\\x3e\\x3cli class\\x3dg\\x3e\\x3ch3 class\\x3d\\x22r\\x22\\x3e\\x3ca href\\x3d\\x22http://embeddedgurus.com/stack-overflow/\\x22 class\\x3dl onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x2710\\x27,\\x27AFQjCNFYQ5E8irNUCpRsbOHHyfc0oqGpWw\\x27,\\x27\\x27,\\x270CEUQFjAJ\\x27)\\x22\\x3e\\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/a\\x3e\\x3c/h3\\x3e\\x3cdiv class\\x3d\\x22s\\x22\\x3e\\x3cem\\x3eStack Overflow\\x3c/em\\x3e. Nigel Jones. Nigel Jones has over 20 years of experience designing electronic circuits and firmware. (full bio). Pages. Contact Nigel. Links \\x3cb\\x3e...\\x3c/b\\x3e\\x3cbr\\x3e\\x3cspan class\\x3df\\x3e\\x3ccite\\x3eembeddedgurus.com/\\x3cb\\x3estack\\x3c/b\\x3e-\\x3cb\\x3eoverflow\\x3c/b\\x3e/\\x3c/cite\\x3e - \\x3cspan class\\x3dgl\\x3e\\x3ca href\\x3d\\x22http://webcache.googleusercontent.com/search?q\\x3dcache:Rl_rUfEG_fIJ:embeddedgurus.com/stack-overflow/+Stack+Overflow\\x26amp;cd\\x3d10\\x26amp;hl\\x3den\\x26amp;ct\\x3dclnk\\x22 onmousedown\\x3d\\x22return rwt(this,\\x27\\x27,\\x27\\x27,\\x27\\x27,\\x2710\\x27,\\x27AFQjCNFqMjsc1pBI9JexjMSPY7wm5QLI8w\\x27,\\x27\\x27,\\x270CEcQIDAJ\\x27)\\x22\\x3eCached\\x3c/a\\x3e\\x3c/span\\x3e\\x3c/span\\x3e\\x3c/div\\x3e\\x3c!--n--\\x3e\x27,_ss);\x3c/script\x3e"
}/*""*/{
    e: "j9iHTLXlLNmXOJLQ3cMO",
    c: 1,
    u: "http://www.google.com/search?hl\x3den\x26expIds\x3d17259,24472,24923,25260,25901,25907,26095,26446,26530\x26sugexp\x3dldymls\x26xhr\x3dt\x26q\x3dStack%20Overflow\x26cp\x3d6\x26pf\x3dp\x26sclient\x3dpsy\x26aq\x3df\x26aqi\x3dg4g-o1\x26aql\x3d\x26oq\x3dStack+\x26gs_rfai\x3d\x26pbx\x3d1\x26fp\x3df97fdf10596ae095\x26tch\x3d1\x26ech\x3d1\x26psi\x3dj9iHTO3xBo2CONvDzaEO12839712156911",
    d: "\x3cscript\x3eje.p(_loc,\x27botstuff\x27,\x27 \\x3cdiv id\\x3dbrs style\\x3d\\x22clear:both;margin-bottom:17px;overflow:hidden\\x22\\x3e\\x3cdiv class\\x3d\\x22med\\x22 style\\x3d\\x22text-align:left\\x22\\x3eSearches related to \\x3cem\\x3eStack Overflow\\x3c/em\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dbrs_col\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+error\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEkQ1QIoAA\\x22\\x3estack overflow \\x3cb\\x3eerror\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+internet+explorer\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEoQ1QIoAQ\\x22\\x3estack overflow \\x3cb\\x3einternet explorer\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dfix+stack+overflow\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEsQ1QIoAg\\x22\\x3e\\x3cb\\x3efix\\x3c/b\\x3e stack overflow\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+xp\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CEwQ1QIoAw\\x22\\x3estack overflow \\x3cb\\x3exp\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3c/div\\x3e\\x3cdiv class\\x3dbrs_col\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+javascript\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CE0Q1QIoBA\\x22\\x3estack overflow \\x3cb\\x3ejavascript\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+java\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CE4Q1QIoBQ\\x22\\x3estack overflow \\x3cb\\x3ejava\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+c%2B%2B\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CE8Q1QIoBg\\x22\\x3estack overflow \\x3cb\\x3ec++\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3cp\\x3e\\x3ca href\\x3d\\x22/search?hl\\x3den\\x26amp;q\\x3dstack+overflow+windows+xp\\x26amp;revid\\x3d-1\\x26amp;sa\\x3dX\\x26amp;ei\\x3dj9iHTLXlLNmXOJLQ3cMO\\x26amp;sqi\\x3d2\\x26amp;ved\\x3d0CFAQ1QIoBw\\x22\\x3estack overflow \\x3cb\\x3ewindows xp\\x3c/b\\x3e\\x3c/a\\x3e\\x3c/p\\x3e\\x3c/div\\x3e\\x3c/div\\x3e \x27,_ss);/*  */\x3c/script\x3e"
}/*""*/

How to Properly Google for C

You can use the + or - signs to add or remove weight for a search term.
However the best place to search really isn't google at all, it's StackOverflow

A few google examples anyway:

+C for articles where the letter C stands alone
+C -C++ for C articles where there are no references to C++
+"C Sharp" for articles with weight added to a grouped term

Best Answer

Related Solutions

Database – the datastore used by Google for Google Instant

How to Properly Google for C

Related Topic