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Why do we need virtual functions in C++?
...ey're required:
Let's say you have these two classes:
class Animal
{
public:
void eat() { std::cout << "I'm eating generic food."; }
};
class Cat : public Animal
{
public:
void eat() { std::cout << "I'm eating a rat."; }
};
In your main function:
Animal *ani...
How do I create a unique ID in Java? [duplicate]
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edited Jan 5 '16 at 9:15
BalusC
953k341341...
maven-dependency-plugin (goals “copy-dependencies”, “unpack”) is not supported by m2e
...ole workspace via Eclipse settings.
Save this file somewhere on the disk: https://gist.github.com/maksimov/8906462
In Eclipse/Preferences/Maven/Lifecycle Mappings browse to this file and click OK:
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How to delete a character from a string using Python
There is a string, for example. EXAMPLE .
16 Answers
16
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How to test which port MySQL is running on and whether it can be connected to?
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To find a listener on a port, do this:
netstat -tln
You should see a line that looks like this if mysql is indeed listening on that port.
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
Port 3306 is MyS...
How to write a simple database engine [closed]
... useful right now and in the future.
It even has a decent community here: https://stackoverflow.com/questions/tagged/sqlite
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Call method in directive controller from other controller
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to change port number for apache in WAMP
I am new to WAMP server and installed it on my system but after installing it when I check it by going to localhost url like this http://localhost/ in the browser it is not working. I am getting a 404 error and blank page .
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How does C compute sin() and other math functions?
I've been poring through .NET disassemblies and the GCC source code, but can't seem to find anywhere the actual implementation of sin() and other math functions... they always seem to be referencing something else.
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Using group by on multiple columns
I understand the point of GROUP BY x .
2 Answers
2
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