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Git - Undo pushed commits
...ository, synchronized with a local repository (development) and the server one (prod). I've been making some commited changes already pushed to remote and pulled from the server. Now, I want to undo those changes. So I could just git checkout to the commit before the changes and commit the new cha...
SET versus SELECT when assigning variables?
...NSI standard for variable assignment, SELECT is not.
SET can only assign one variable at a time, SELECT can make multiple assignments at once.
If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
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ECB should not be used if encrypting more than one block of data with the same key.
CBC, OFB and CFB are similar, however OFB/CFB is better because you only need encryption and not decryption, which can save code space.
CTR is used if you want good parallelization (ie. sp...
Algorithm to find top 10 search terms
...e book, but he surely must have been more famous due to this: "Motwani was one of the co-authors (with Larry Page and Sergey Brin, and Terry Winograd) of an influential early paper on the PageRank algorithm, the basis for Google's search techniques. " (en.wikipedia.org/wiki/Rajeev_Motwani)
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How to filter specific apps for ACTION_SEND intent (and set a different text for each app)
...t been able to gather a solution based on the answers given. Hopefully someone can help. I would like to provide the ability to share within an app. Following Android Dev Alexander Lucas' advice , I'd prefer to do it using intents and not using the Facebook/Twitter APIs.
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Multiple simultaneous downloads using Wget?
I'm using wget to download website content, but wget downloads the files one by one.
15 Answers
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What is the purpose of a stack? Why do we need it?
...a new processor. You have to write the code generator for it twenty times, one for each language.
Furthermore, it is difficult and dangerous work. Writing efficient code generators for chips that you are not an expert on is a hard job! Compiler designers are experts on the semantic analysis of thei...
multiple definition of template specialization when using different objects
... need to put it in a .cpp file instead of a .h or you end up violating the one definition rule as David says. Note that when you partially specialize templates, the partial specializations do still depend on one or more template parameters, so they still go in a .h file.
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How can I generate an MD5 hash?
... MD5 instance of MessageDigest you can use.
The compute the hash by doing one of:
Feed the entire input as a byte[] and calculate the hash in one operation with md.digest(bytes).
Feed the MessageDigest one byte[] chunk at a time by calling md.update(bytes). When you're done adding input bytes, ca...
Visual Studio 2012 - Intellisense sometimes disappearing / broken
...lutions for getting Visual Studio 2012 intellisense back on track try them one by one, hope one of them will solve the problem:
When the problem occurs next time follow these:
start from #1 and Move to next when the earlier one doesn't work for you
1: Close all the tabs and open your file again. (...