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Why does C++ need a separate header file?

... To my (limited - I'm not a C developer normally) understanding, this is rooted in C. Remember that C does not know what classes or namespaces are, it's just one long program. Also, functions have to be declared before you use them. For example, the following should give a compiler error: void S...
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When to use the different log levels

...ow only warnings and errors may give quick insight into early hints at the root cause of a subsequent error. Warnings should be used sparingly so that they don't become meaningless. For example, loss of network access should be a warning or even an error in a server application, but might be just ...
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Avoiding if statement inside a for loop?

... In that case, keep in mind that premature optimization is the root of all evil. When programming, always focus on code readability and make sure others understand what you are trying to do. Only consider micro-optimizations and various hacks after profiling your program and identifying ...
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Why should hash functions use a prime number modulus?

...s again a polynomial of the same degree N (or less). It has no more than N roots (this is here the nature of math shows itself, since this claim is only true for a polynomial over a field => prime number). So if N is much less than P, you are likely not to have a collision. After that, experiment...
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How to get the Full file path from URI

...nd of unique id per storage // don't know any API that can get the root path of that storage based on its id. // // so no "primary" type, but let the check here for other devices if ("primary".equalsIgnoreCase(type)) { fullPath = Environment.getExternalSto...
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Generate a random point within a circle (uniformly)

...p to r = 0. Also, u = 1 shoudl map to r = R. Also, it goes by the square root function, which makes sense and matches the link. share | improve this answer | follow ...
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Running a Haskell program on the Android OS

...icially run native executables on android. You could probably do it with a rooted phone, thus I assume this means you can not distribute native executables on the app store even when the NDK gcc port can generate native executables just fine. This also probably kills the option for using LLVM unless...
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How do I check if there are duplicates in a flat list?

... do you go from a discussion of differences to premature optimization, the root of all evil? – steveha Oct 9 '09 at 16:47 3 ...
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How can I use Autolayout to set constraints on my UIScrollview?

...croll. Add a Scroll View Add a UIScrollView and pin all four sides to the root view of the view controller. Add a Content View Add a UIView as a subview to the scroll view. This is key. Don't try to add lots of subviews to the scroll view. Just add a single UIView. This will be your content view f...
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Behaviour for significant change location API when terminated/suspended?

...nched from a terminated state (by a location event). This is basically the root of my question, 'what happens for the suspended case?'. – RedBlueThing Aug 10 '10 at 5:28 ...