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Abstract classes in Swift Language
... importantly, notice that there is no dynamic dispatch. When logSalary is called on the instance that is stored as a SoftwareEngineer it calls the overridden version of the method. When logSalary is called on the instance after it has been cast to an Employee, it calls the original implementation (i...
What is the purpose of the “role” attribute in HTML?
...efine the default accessibility role of a web component. Even if/once that API is standardized, there may be need to override the default role of a component.
Note/Reply
You also wrote:
I see some people make up their own. Is that allowed or a correct use of the role attribute?
That's an allowed u...
What is a thread exit code?
...
There actually doesn't seem to be a lot of explanation on this subject apparently but the exit codes are supposed to be used to give an indication on how the thread exited, 0 tends to mean that it exited safely whilst anything else ten...
How can mixed data types (int, float, char, etc) be stored in an array?
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@texasbruce also called a "tagged union". I'm using this technique too in my own language. ;)
– user529758
Sep 2 '13 at 16:50
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jQuery UI Sortable Position
...
Use update instead of stop
http://api.jqueryui.com/sortable/
update( event, ui )
Type: sortupdate
This event is triggered when the user stopped sorting and the DOM
position has changed.
.
stop( event, ui )
Type: sortstop
This e...
Python exit commands - why so many and when should each be used?
...s functionality was included to help people who do not know Python. After all, one of the most likely things a newbie will try to exit Python is typing in quit.
Nevertheless, quit should not be used in production code. This is because it only works if the site module is loaded. Instead, this fun...
Fast Bitmap Blur For Android SDK
...x Blur, but is
* 7x faster than my Gaussian Blur implementation.
*
* I called it Stack Blur because this describes best how this
* filter works internally: it creates a kind of moving stack
* of colors whilst scanning through the image. Thereby it
* just has to add one new block of color to th...
How do I count a JavaScript object's attributes? [duplicate]
...ry object in JavaScript derives from — includes many attributes automatically, and the exact set of attributes you get depends on the particular interpreter and what code has executed before yours. So, you somehow have to separate the ones you defined from those you got "for free."
Here's one way...
How to save the output of a console.log(object) to a file?
...nsole.save method. It creates a FileBlob from the input, and then automatically downloads it.
(function(console){
console.save = function(data, filename){
if(!data) {
console.error('Console.save: No data')
return;
}
if(!filename) filename = 'console.json'
if(type...
How do you remove all the options of a select box and then add one option and select it with jQuery?
Using core jQuery, how do you remove all the options of a select box, then add one option and select it?
24 Answers
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