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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."...
How to change users in TortoiseSVN
...ows for the server that hosts our subversion. I cleared this stored value from windows credentials and all is well.
http://windows.microsoft.com/en-us/windows7/remove-stored-passwords-certificates-and-other-credentials
sha...
Bootstrap 3 and 4 .container-fluid with grid adding unwanted padding
...
Please find the actual css from Bootstrap
.container-fluid {
padding-right: 15px;
padding-left: 15px;
margin-right: auto;
margin-left: auto;
}
.row {
margin-right: -15px;
margin-left: -15px;
}
When you add a .container-fluid class, it ad...
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...
How to create a simple proxy in C#?
...est to that remote server. Reads response.
Step 3: After response is read from remote HTTP server, Proxy sends the response through an earlier opened TCP connection with browser.
Schematically it will look like this:
Browser Proxy HTTP server
Open ...
Difference between Python's Generators and Iterators
...t class Iterator with abstract methods __next__
We can get the iterators from the built-in objects (or custom objects) with the iter function:
>>> all(isinstance(iter(element), collections.Iterator) for element in (
(), [], {}, set(), frozenset(), '', b'', bytearray(), range(0), ...
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, ...
No Persistence provider for EntityManager named
...
Apart from this, I also had to move up from hibernate-entitymanager-3.4.0.GA to 3.6.10.Final. Just in case you still have a legacy codebase using Hibernate 3.
– Javi Vazquez
Sep 17 '15 at 5:37...
Erasing elements from a vector
I want to clear a element from a vector using the erase method. But the problem here is that the element is not guaranteed to occur only once in the vector. It may be present multiple times and I need to clear all of them. My code is something like this:
...
Automatically update version number
...anuelJackson haha! yeah it would. too bad i don't keep up with my comments from 2010, sorry! :P The march of time and versions saddens us all.
– jrsconfitto
Jun 5 '15 at 18:24
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