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Practical uses for AtomicInteger
...r unique-indexing), without having to resort to synchronizing all access.
More complex synchronization-free logic can be employed by using compareAndSet() as a type of optimistic locking - get the current value, compute result based on this, set this result iff value is still the input used to do t...
Returning a C string from a function
...y String";
}
Background:
It's so fundamental to C & C++, but little more discussion should be in order.
In C (& C++ for that matter), a string is just an array of bytes terminated with a zero byte - hence the term "string-zero" is used to represent this particular flavour of string. Ther...
Is there a Java equivalent to C#'s 'yield' keyword?
... and disadvantages. It's likely Aviad's solution is faster, while Jim's is more portable (for example, I don't think Aviad's library will work on Android).
Interface
Aviad's library has a cleaner interface - here's an example:
Iterable<Integer> it = new Yielder<Integer>() {
@Overr...
Is “double hashing” a password less secure than just hashing it once?
Is hashing a password twice before storage any more or less secure than just hashing it once?
16 Answers
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How to handle ListView click in Android
...OID_SDK/samples/ApiDemos/src/com/example/android/apis/view/List14.java for more details
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How do servlets work? Instantiation, sessions, shared variables and multithreading
...y that value (1 is 1st, 2 is 2nd, etc). If the same value is specified for more than one servlet, then each of those servlets is loaded in the same order as they appear in the web.xml, web-fragment.xml, or @WebServlet classloading. In the event the "load-on-startup" value is absent, the init() metho...
Logger slf4j advantages of formatting with {} instead of string concatenation
... varargs parameters since API version 1.7.
For those cases where you need more than 2 and you're stuck with pre-1.7 SLF4J, then just use either string concatenation or new Object[] { param1, param2, param3, ... }. There should be few enough of them that the performance is not as important.
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mysqli or PDO - what are the pros and cons? [closed]
...ch would otherwise be read-write assoc. arrays, this is acceptable. Furthermore it permits easier type checking as records float through the system.
– Dan Lugg
Jul 16 '11 at 0:50
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What is the Ruby (spaceship) operator?
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Windows batch: sleep [duplicate]
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