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Renaming xcode 4 project and the actual folder

... Rename your source folder in the Finder. This will break the project initially because Xcode doesn't automatically detect when the real folders that the virtual (yellow) project folders point to are changed, so all the files inside that folder will turn red in Xcode. Don't worry about that, we'll f...
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JSON, REST, SOAP, WSDL, and SOA: How do they all link together

...ntly doing some exams and I'm struggling through some concepts. These have all been 'mentioned' in my notes really but I didn't really understand how they all linked together. As far as my understanding is: ...
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Why don't they teach these things in school? [closed]

...r of Code. I learned a lot (probably more than I've learned in the sum of all my university coursework). I'm really wondering why they don't teach a few of the things I learned sooner in school though. To name a few: ...
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Why should hash functions use a prime number modulus?

... Usually a simple hash function works by taking the "component parts" of the input (characters in the case of a string), and multiplying them by the powers of some constant, and adding them together in some integer type. So for e...
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How is it possible to declare nothing inside main() in C++ and yet have a working application after

...own in the following question (which I had asked long back): Is main() really start of a C++ program? Note that such code is not safe and should be best avoided in general. For example, the std::cout object may not be initialized when print_fibs() is executed, if so then what would std::cout do...
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Jar Mismatch Found 2 versions of android-support-v4.jar in the dependency list

.... I've been playing with the build path to no success. Step #1: Undo all that. If you are messing with the build path, on R16 or higher version of the ADT plugin for Eclipse, you're doing it wrong. Step #2: Pick one of those two versions of the JAR, or pick the one from the "extras" area of y...
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To prevent a memory leak, the JDBC Driver has been forcibly unregistered

...s /lib. If you still keep it in webapp's /WEB-INF/lib, then you should manually register and deregister it using a ServletContextListener. Downgrade to Tomcat 6.0.23 or older so that you will not be bothered with those warnings. But it will silently keep leaking memory. Not sure if that's good to kn...
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How can I pair socks from a pile efficiently?

... enough (and faster). For each color of socks, form a pile. Iterate over all socks in your input basket and distribute them onto the color piles. Iterate over each pile and distribute it by some other metric (e.g. pattern) into the second set of piles Recursively apply this scheme until you have d...
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Memcached vs. Redis? [closed]

...re popular, and better supported than memcached. Memcached can only do a small fraction of the things Redis can do. Redis is better even where their features overlap. For anything new, use Redis. Memcached vs Redis: Direct Comparison Both tools are powerful, fast, in-memory data stores that are usef...
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Glorified classes in the Java language

... lot of different answers, so I thought it would be useful to collect them all (and add some): Classes AutoBoxing classes - the compiler only allows for specific classes Class - has its own literals (int.class for instance). I would also add its generic typing without creating new instances. Stri...