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Static class initializer in PHP

I have an helper class with some static functions. All the functions in the class require a ‘heavy’ initialization function to run once (as if it were a constructor). ...
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How do I uniquely identify computers visiting my web site?

..., fingerprints changed quite rapidly, but even a simple heuristic was usually able to guess when a fingerprint was an “upgraded” version of a previously observed browser’s fingerprint, with 99.1% of guesses correct and a false positive rate of only 0.86%. We discuss what privacy thr...
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How do I remove the space between inline/inline-block elements?

...ttp://jsfiddle.net/thirtydot/dGHFV/1361/ This works in recent versions of all modern browsers. It works in IE8. It does not work in Safari 5, but it does work in Safari 6. Safari 5 is nearly a dead browser (0.33%, August 2015). Most of the possible issues with relative font sizes are not complicat...
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Transpose/Unzip Function (inverse of zip)?

...'d', 4)]) [('a', 'b', 'c', 'd'), (1, 2, 3, 4)] The way this works is by calling zip with the arguments: zip(('a', 1), ('b', 2), ('c', 3), ('d', 4)) … except the arguments are passed to zip directly (after being converted to a tuple), so there's no need to worry about the number of arguments g...
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Markdown and including multiple files

Is there any markdown fork that allows you to reference other files, something like an includes file? Specifically, I want to create a separate markdown file with links that I call often but not always (call this B.md), then when I link by reference in the md file I'm writing (A.md), I'd like it to ...
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clang: how to list supported target architectures?

Currently I am interested in ARM in general and specifically iphone/android targets. But I just want to know more about clang, since it feels to play important role in the years to come. ...
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How to send an object from one Android Activity to another using Intents?

...out.writeInt(mData); } // this is used to regenerate your object. All Parcelables must have a CREATOR that implements these two methods public static final Parcelable.Creator<MyParcelable> CREATOR = new Parcelable.Creator<MyParcelable>() { public MyParcelable createF...
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What is in your Mathematica tool bag? [closed]

We all know that Mathematica is great, but it also often lacks critical functionality. What kind of external packages / tools / resources do you use with Mathematica? ...
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Preventing referenced assembly PDB and XML files copied to output

...You can also specify this via the command line: MsBuild.exe build.file /p:AllowedReferenceRelatedFileExtensions=none share | improve this answer | follow | ...
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Can I use if (pointer) instead of if (pointer != NULL)?

...s converted to true. This is part of the C++ standard conversion, which falls in Boolean conversion clause: § 4.12 Boolean conversions A prvalue of arithmetic, unscoped enumeration, pointer, or pointer to member type can be converted to a prvalue of type bool. A zero value, null pointer valu...