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What is stack unwinding?
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Stack unwinding is usually talked about in connection with exception handling. Here's an example:
void func( int x )
{
char* pleak = new char[1024]; // might be lost => memory leak
std::string s( "hello world" ); // will be properly destructed
if ( x ) throw std::runtime_error(...
Why do objects of the same class have access to each other's private data?
...specification, which is why it even has its own dedicated chapter in the standard (11.5). But still any per-object features described there are rather rudimentary. Again, access control in C++ is meant to work on per-class basis.
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Should each and every table have a primary key?
I'm creating a database table and I don't have a logical primary key assigned to it. So, I'm thinking about leaving it without a primary key, but I'm feeling a bit guilty about it. Should I?
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使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...tents
rver.
Keep in mind that the extensions mechanism is still unstable and under development. Any aia files you build in steps (1) a
Using App Inventor extensions to implement multitouch: Rotation detector
A demo app with rotation detector extension component
How to build rotation detector...
What is “String args[]”? parameter in main method Java
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In Java args contains the supplied command-line arguments as an array of String objects.
In other words, if you run your program as java MyProgram one two then args will contain ["one", "two"].
If you wanted to output the contents of args, you can just loop thro...
Google Maps API v2: How to make markers clickable?
How to I make the markers in Android Google Maps API v2 become clickable so they will either bring up a menu with options or just start a new activity? I believe I made the markers in my app currently in a "newb" method. I didn't assign them a name or a method to be able to link it in with the rest ...
Difference between res.send and res.json in Express.js
... are identical when an object or array is passed, but res.json() will also convert non-objects, such as null and undefined, which are not valid JSON.
The method also uses the json replacer and json spaces application settings, so you can format JSON with more options. Those options are set like so:...
Parsing boolean values with argparse
...to do --flag False or --other-flag True and then use some custom parser to convert the string to a boolean.. action='store_true' and action='store_false' are the best ways to use boolean flags
– kevlarr
Mar 20 '18 at 14:23
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Set a DateTime database field to “Now”
...setting the SQLparameter to DateTime.Now will do this or If I should first convert the date to a string and then add it to the request ?
– Thibault Witzig
Dec 20 '10 at 9:41
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Getter and Setter?
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You can use php magic methods __get and __set.
<?php
class MyClass {
private $firstField;
private $secondField;
public function __get($property) {
if (property_exists($this, $property)) {
return $this->$property;
}
}
public func...