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Why use #ifndef CLASS_H and #define CLASS_H in .h file but not in .cpp?
... */
#endif
This is a preprocessor technique of preventing a header file from being included multiple times, which can be problematic for various reasons. During compilation of your project, each .cpp file (usually) is compiled. In simple terms, this means the compiler will take your .cpp file, ...
Why do we need virtual functions in C++?
...you overload func() so it takes a Cat*? If you have to derive more animals from Animal they would all need their own func().
The solution is to make eat() from the Animal class a virtual function:
class Animal
{
public:
virtual void eat() { std::cout << "I'm eating generic food."...
UICollectionView current visible cell index
... Can you please elaborate on where self.mainImageCollection comes from? Many thanx in advance for your further detail.
– Benjamin McFerren
Jun 1 '14 at 21:57
...
How to change webservice url endpoint?
...nt using JBoss utils (JAX-WS compatible)
using Eclipse 'web service client from a wsdl'.
4 Answers
...
Downloading Java JDK on Linux via wget is shown license page instead
When I try to download Java from Oracle I instead end up downloading a page telling me that I need agree to the OTN license terms.
...
How to watch for array changes?
...y1:
Object.defineProperty(myArray, "push", {
enumerable: false, // hide from for...in
configurable: false, // prevent further meddling...
writable: false, // see above ^
value: function () {
for (var i = 0, n = this.length, l = arguments.length; i < l; i++, n++) {
Rai...
How do I get rid of this unwanted bar from Eclipse?
...overflow.com%2fquestions%2f9650664%2fhow-do-i-get-rid-of-this-unwanted-bar-from-eclipse%23new-answer', 'question_page');
}
);
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Name
...
Internal Error 500 Apache, but nothing in the logs?
...rror logs?
The errors that cause your 500 Internal Server Error are coming from a PHP module. By default, PHP does NOT log these errors. Reason being you want web requests go as fast as physically possible and it's a security hazard to log errors to screen where attackers can observe them.
These i...
What do the &,
... database: dev_development
test: &test
adapter: postgresql # from the "default" alias
database: test_test # overridden by the duplicate key
and at the same time make the "test" node as well available under the alias "test".
Have a look at the YAML specification - 2.2 Structu...
Ways to save Backbone.js model data?
...ecific uses that Backbone assumes. When you want to get a certain resource from the server, (e.g. donut model I saved last time, a blog entry, an computer specification) and that resource exists, you do a GET request. Conversely, when you want to create a new resource you use POST.
Before I got int...