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:: (double colon) operator in Java 8
...urned by some method and we want to sort the employees by their grade. We know we can make use of anonymous class as:
List<Employee> employeeList = getDummyEmployees();
// Using anonymous class
employeeList.sort(new Comparator<Employee>() {
@Override
p...
How to add a right button to a UINavigationController?
...roller = [[PropertyViewController alloc] initWithRootViewController:vc];
Now, this infoButton that has been created programatically will show up in the navigation bar. The idea is that the navigation controller picks up its display information (title, buttons, etc) from the UIViewController that i...
What does the “yield” keyword do?
... print(i)
0
1
4
Here it's a useless example, but it's handy when you know your function will return a huge set of values that you will only need to read once.
To master yield, you must understand that when you call the function, the code you have written in the function body does not run. The ...
Remove accents/diacritics in a string in JavaScript
...
Using a regex character class to match the U+0300 → U+036F range, it is now trivial to globally get rid of the diacritics, which the Unicode standard conveniently groups as the Combining Diacritical Marks Unicode block.
See comment for performance testing.
Alternatively, if you just want sorting...
Redis: Show database size/size for keys
...acticable for debugging to me, not too mention that the dump is a few gigs now!
– Bernhard Vallant
Oct 3 '11 at 23:47
...
Creating a Radial Menu in CSS
...t it's another possible solution. I'm working on a compass interface right now that has a similar style of arc shaped buttons. I decided to develop it using Raphael and SVG.
I created an arc shape in Illustrator, exported the SVG for it, grabbed the path definition for the arc from the exported SVG...
boost::flat_map and its performance compared to map and unordered_map
It is common knowledge in programming that memory locality improves performance a lot due to cache hits. I recently found out about boost::flat_map which is a vector based implementation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able ...
What is the point of a private pure virtual function?
... virtual void SetState( int var, int val ) {/*some implementation*/}
};
Now let's assume you want to create a derived class and you need to provide a new implementation only for the method, that takes two ints as arguments.
class MyTurbochargedV8 : public Engine
{
public:
// To prevent SetSt...
What's the difference between eval, exec, and compile?
...built-in function (both are built-in functions in Python 3).
It is a well-known fact that the official syntax of exec in Python 2 is exec code [in globals[, locals]].
Unlike majority of the Python 2-to-3 porting guides seem to suggest, the exec statement in CPython 2 can be also used with syntax th...
Is there a use-case for singletons with database access in PHP?
...make a choice and observe the ramifications of your decision. Having the knowledge to interpret your code's evolution over time is much more important than doing it right in the first place.
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