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ERROR 2006 (HY000): MySQL server has gone away

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Abstract classes in Swift Language

...den version even though the instance is actually a Software Engineer. For more information, check great WWDC video about that feature: Building Better Apps with Value Types in Swift share | improve...
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How to download an entire directory and subdirectories using wget?

... project using wget , as the SVN server for that project isn't running anymore and I am only able to access the files through a browser. The base URLs for all the files is the same like ...
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What are Aggregates and PODs and how/why are they special?

...were not explicitly initialized, we get a compile-time error. If there are more initializers than necessary, we get a compile-time error as well. struct X { int i1; int i2; }; struct Y { char c; X x; int i[2]; float f; protected: static double d; private: void g(){} }; Y y ...
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Get the name of an object's type

...of determining types in JavaScript... I recently updated this to be a bit more exhaustive, though it is hardly that. Corrections welcome... Using the constructor property... Every object has a value for its constructor property, but depending on how that object was constructed as well as what you w...
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When to use setAttribute vs .attribute= in JavaScript?

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Is it true that one should not use NSLog() on production code?

... prefix header rather than its own file. You could, if you wanted, build a more complicated logging system by having DebugLog interact with normal Objective-C objects. For instance, you could have a logging class that writes to its own log file (or database), and includes a 'priority' argument you c...
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PHP exec() vs system() vs passthru()

... @Kalium: can you elaborate more on your statement? just stating some vague percentage statistics does not convince me. I believe that using system calls to execute scripts are totally fine as long as the whole application does not depend one a bunch of...
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What is a Context Free Grammar?

... Language Theory is related to Theory of Computation. Which is the more philosophical side of Computer Science, about deciding which programs are possible, or which will ever be possible to write, and what type of problems is it impossible to write an algorithm to solve. A regular expressio...
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How to use the “number_to_currency” helper method in the model rather than view?

...ect to mediate between the model and view. This almost definitely requires more initial work than other solutions, but is almost always a better design. Using helpers in a presenter/view-model doesn’t violate MVC, as they reside in the view layer, replacing traditional custom Rails helpers and log...