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SharedPreferences.onSharedPreferenceChangeListener not being called consistently

... preference change listener like this (in the onCreate() of my main activity): 8 Answers ...
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How to get the body's content of an iframe in Javascript?

... The exact question is how to do it with pure JavaScript not with jQuery. But I always use the solution that can be found in jQuery's source code. It's just one line of native JavaScript. For me it's the best, easy readable and even afaik the shortest way ...
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What is the effect of extern “C” in C++?

...le that contains just the declaration of your function. Your function definition is contained in a binary format (that was compiled by your C++ compiler) that the client C linker will then link to using the C name. Since C++ has overloading of function names and C does not, the C++ compiler cannot j...
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Is floating point math broken?

... Binary floating point math is like this. In most programming languages, it is based on the IEEE 754 standard. The crux of the problem is that numbers are represented in this format as a whole number times a power of two; rational numbers (such as 0.1, which is 1/10) whose denominator is not a pow...
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Regular expressions in an Objective-C Cocoa application

Initial Googling indicates that there's no built-in way to do regular expressions in an Objective-C Cocoa application. 10 A...
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Most efficient way to check for DBNull and then assign to a variable?

...follow | edited Jan 24 '18 at 10:50 community wiki ...
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0.1 float is greater than 0.1 double. I expected it to be false [duplicate]

...he rounding mode when converting the double to float. float has 24 binary bits of precision, and double has 53. In binary, 0.1 is: 0.1₁₀ = 0.0001100110011001100110011001100110011001100110011…₂ ^ ^ ^ ^ 1 10 20 24 So if we round up a...
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When & why to use delegates? [duplicate]

... I agree with everything that is said already, just trying to put some other words on it. A delegate can be seen as a placeholder for a/some method(s). By defining a delegate, you are saying to the user of your class, "Please feel fr...
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How to persist a property of type List in JPA?

What is the smartest way to get an entity with a field of type List persisted? 12 Answers ...
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How to increase storage for Android Emulator? (INSTALL_FAILED_INSUFFICIENT_STORAGE)

... Update This answer is, as I write this, nearly eight years old, and about five years stale. But it's still (as I write this) the "accepted" answer, because it answered the question when it was asked. The newer answer, that applies to the newer Android St...