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Generate random numbers using C++11 random library
...om that slide below.
You can see his full talk here: http://channel9.msdn.com/Events/GoingNative/2013/rand-Considered-Harmful
#include <random>
#include <iostream>
int main() {
std::random_device rd;
std::mt19937 mt(rd());
std::uniform_real_distribution<double> dist(...
How to check if PHP array is associative or sequential?
...rrays as associative, so there aren't any built in functions. Can anyone recommend a fairly efficient way to check if an array contains only numeric keys?
...
In C#, why is String a reference type that behaves like a value type?
...istics of a value type such as being immutable and having == overloaded to compare the text rather than making sure they reference the same object.
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What are the disadvantages to declaring Scala case classes?
...se class. That's the restriction.
Other advantages you missed, listed for completeness: compliant serialization/deserialization, no need to use "new" keyword to create.
I prefer non-case classes for objects with mutable state, private state, or no state (e.g. most singleton components). Case clas...
Getting an element from a Set
... exactly what a set should be all about. In my case, I'd like to get some complex object from a set by key (String). This String is encapsulated (and unique) to the object being mapped. In fact, the whole object 'revolves' around said key. Furthermore, the caller knows said String, but not the obje...
What is the difference between concurrency and parallelism?
...
Concurrency is when two or more tasks can start, run, and complete in overlapping time periods. It doesn't necessarily mean they'll ever both be running at the same instant. For example, multitasking on a single-core machine.
Parallelism is when tasks literally run at the same ti...
What are good alternatives to SQL (the language)? [closed]
...h is now called Slick) and rewrote the entire system and every 6 queries become 1, just because you could encapsulate and have local methods! If anyone is suffering from SQL horrors, look up Scala Slick or Quill and prepare for enlightenment!
– ChoppyTheLumberjack
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Multiple inheritance/prototypes in JavaScript
I've come to a point where I need to have some sort of rudimentary multiple inheritance happening in JavaScript. (I'm not here to discuss whether this is a good idea or not, so please kindly keep those comments to yourself.)
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How are software license keys generated?
... Additionally, it requires online activation.
The full algorithm is rather complex, but outlined nicely in this (completely legal!) paper, published in Germany.
Of course, no matter what you do, unless you are offering an online service (like World of Warcraft), any type of copy protection is just ...
What's the best way to put a c-struct in an NSArray?
...ort CoreGraphics structures – you can use it for your own too. I would recommend doing so, as the class is probably lighter weight than NSData for simple data structures.
Simply use an expression like the following:
[NSValue valueWithBytes:&p objCType:@encode(Megapoint)];
And to get the va...