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When do I really need to use atomic instead of bool? [duplicate]
...ssible that multiprocessor system has this variable in multiple copies and one thread can see old value even after another thread has changed it to new. Atomic introduces memory barrier, so it becomes impossible.
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Monad in plain English? (For the OOP programmer with no FP background)
...on the amplified type, that obeys the rules of functional composition mentioned before.
There is often a way to get the unamplified type back out of the amplified type. Strictly speaking this operation is not required to have a monad. (Though it is necessary if you want to have a comonad. We won't c...
What are the differences between a multidimensional array and an array of arrays in C#?
...wer below, It might be the case that on windows jagged arrays are fast but one has to realize that this is entirely CLR specific and not the case with e.g. mono...
– John Leidegren
Mar 1 '09 at 8:09
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What are the most useful Intellij IDEA keyboard shortcuts? [closed]
... all the places where this method is implemented, and you can select which one you want to go to (if there is only one implementation, you go straight there). The same goes for overridden methods.
The opposite of this is Ctrl + U (Go to super-method/super-class). If the caret is at the implementati...
Can I have multiple background images using CSS?
...it possible to have two background images? For instance, I'd like to have one image repeat across the top (repeat-x), and another repeat across the entire page (repeat), where the one across the entire page is behind the one which repeats across the top.
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Calculate the median of a billion numbers
If you have one billion numbers and one hundred computers, what is the best way to locate the median of these numbers?
25 A...
C++ Singleton design pattern
...zy-evaluated, guaranteed-destruction, not-technically-thread-safe:
Can any one provide me a sample of Singleton in c++?
Here is an updated C++11 implementation of the Singleton design pattern that is lazy-evaluated, correctly-destroyed, and thread-safe.
class S
{
public:
static S&...
What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
...e of their own data and graft it on top of our model, it could usually be done on site by the sales rep. Flexibility also helped when we were designing a new feature, saving us from trying to squeeze new data into a rigid data model.
Having a weird database let us build a lot of our other weird tec...
How do you delete all text above a certain line
...top of the file.
Also
dG
will delete all lines at or below the current one
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In which order should floats be added to get the most precise result?
... bit) floats, and there are 1 billion values equal to 1 / (1 billion), and one value equal to 1. If the 1 comes first, then the sum will come to 1, since 1 + (1 / 1 billion) is 1 due to loss of precision. Each addition has no effect at all on the total.
If the small values come first, they will at ...