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boost::flat_map and its performance compared to map and unordered_map
...e Loki AssocVector, but with some supplementary modernizations coming with C++11, exploiting move semantics to accelerate insert and delete of single elements.
This is still an ordered container. Most people usually don't need the ordering part, therefore the existence of unordered...
Have you con...
When is the thread pool used?
...ot the whole picture.
Certain functions and modules, usually written in C/C++, support asynchronous I/O. When you call these functions and methods, they internally manage passing the call on to a worker thread. For instance, when you use the fs module to request a file, the fs module passes that ...
How can I efficiently select a Standard Library container in C++11?
There's a well known image (cheat sheet) called "C++ Container choice". It's a flow chart to choose the best container for the wanted usage.
...
What is a mixin, and why are they useful?
In " Programming Python ", Mark Lutz mentions "mixins". I'm from a C/C++/C# background and I have not heard the term before. What is a mixin?
...
Mismatch Detected for 'RuntimeLibrary'
...nswer, I'm writing this.)
This problem arises in newer versions of Visual C++ (the older versions usually just silently linked the program and it would crash and burn at run time.) It means that some of the libraries you are linking with your program (or even some of the source files inside your pr...
Regex Pattern to Match, Excluding when… / Except between
...not the only option. The .NET regex flavors found in C#, VB.NET and Visual C++ for example, as well as the still-experimental regex module to replace re in Python, are the only two engines I know that support infinite-width lookbehind. With these tools, one condition in one lookbehind can take care ...
Fast permutation -> number -> permutation mapping algorithms
...1 ("Computation with large arrays" p.235) for the fast method.
The (GPLed, C++) code is on the same web page.
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ViewPager.setOffscreenPageLimit(0) doesn't work as expected
...protected boolean isVisible;
/**
* 在这里实现Fragment数据的缓加载.
* @param isVisibleToUser
*/
@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
if(getUserVisibleHint()) {
...
How does JavaScript .prototype work?
...
In a language implementing classical inheritance like Java, C# or C++ you start by creating a class--a blueprint for your objects--and then you can create new objects from that class or you can extend the class, defining a new class that augments the original class.
In JavaScript you first...
Dynamic type languages versus static type languages
...blinders" - if this is your worst case example, you obviously haven't used C++ ;-)
– bacar
Jan 30 '12 at 1:45
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