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Why implement interface explicitly?
...leaner code: there will be a compiler error if the Clone method is removed from ICloneable, however if you implement the method implicitly you can end up with unused 'orphaned' public methods
strong typing:
To illustrate supercat's story with an example, this would be my preferred sample code, impl...
Usages of Null / Nothing / Unit in Scala
...tom type is tied to its ability to express variance in type parameters."). From the article you linked to:
One other use of Nothing is as a return type for methods that never
return. It makes sense if you think about it. If a method’s return
type is Nothing, and there exists absolutely no ...
How to edit log message already committed in Subversion?
...value to be
permanently discarded, and Subversion
tries to prevent you from doing this
accidentally. However, there are a
couple of ways to get Subversion to
change a revision property.
The first way is for the repository
administrator to enable revision
property modifications. Th...
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
...rerequisites for Homebrew are the XCode command line tools.
Install XCode from the App Store.
Follow the directions in this Stack Overflow answer to install the XCode Command Line Tools.
Background
A package manager (like apt-get or brew) just gives your system an easy and automated way to install...
JavaScript: Passing parameters to a callback function
...e callback function
//only when we have some missing value
//get this data from ajax or compute
var extraParam = "this data was missing" ;
//call the callback when we have the data
callback(extraParam);
}
// test function
callbackTester (function(k) {
tryMe("hello", "goodbye", k);
});
...
Memory management in Qt?
...ructors of descendents are virtual for this to be true. If ClassB inherits from QObject and ClassC inherits from ClassB, then ClassC will only get properly destroyed by Qt's parent-child relationship if ClassB's destructor is virtual.
– Phlucious
Dec 6 '12 at 2...
How to create a custom attribute in C#
...nality.
So, for instance, let's look at the Validation Application Block, from Microsoft's Enterprise Library. If you look at a code example, you'll see:
/// <summary>
/// blah blah code.
/// </summary>
[DataMember]
[StringLengthValidator(8, RangeBoundaryType.Inclus...
Why hasn't functional programming taken over yet?
... programming (languages), tried out Haskell as well as written one myself. From what I've seen, functional programming has several advantages over the classical imperative style:
...
Draw text in OpenGL ES
...swer is better. That's what I'm currently using. The reason why you switch from standard android vier+canvas to opengl is (amongst others) for speed. Adding a text box over your opengl sort of negates that.
– Shivan Dragon
Feb 18 '12 at 9:19
...
Operator precedence with Javascript Ternary operator
...r h.className, better be specific about it.
Of course, no harm should come from h.className += ' error', but that's another matter.
Also, note that + has precedence over the ternary operator: JavaScript Operator Precedence
...