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Why are variables “i” and “j” used for counters?
... That's a good question. I actually think that "i" might come from integer more than index. I also think it's easy to write on a chalkboard. Back in the 70's we were cautioned to be sure that we wrote our "i" and "j" in a perfectly distinctive manner. Indeed, we were told to draw our "i" exactly ...
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...
Windows batch: sleep [duplicate]
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Execute command without keeping it in history [closed]
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Correct. For more details the OP should have a look at HISTCONTROL and HISTIGNORE in the bash man page.
– u-punkt
Dec 12 '11 at 11:02
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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...
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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Choosing the best concurrency list in Java [closed]
...ntions.
That said, are you sure you need it to be a List? There are a lot more options for concurrent Queues and Maps (and you can make Sets from Maps), and those structures tend to make the most sense for many of the types of things you want to do with a shared data structure.
For queues, you hav...
How do you update Xcode on OSX to the latest version?
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