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How to prevent Node.js from exiting while waiting for a callback?
...
Callback is Not Queued
Node runs until all event queues are empty. A callback is added to an event queue when a call such as
emmiter1.on('this_event',callback).
has executed. This call is part of the code written by t...
What is the meaning of single and double underscore before an object name?
...mc = MyClass()
>>> print mc.__superprivate
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: myClass instance has no attribute '__superprivate'
>>> print mc._semiprivate
, world!
>>> print mc.__dict__
{'_MyClass__superpriv...
When is JavaScript synchronous?
...ript is only asynchronous in the sense that it can make, for example, Ajax calls. The Ajax call will stop executing and other code will be able to execute until the call returns (successfully or otherwise), at which point the callback will run synchronously. No other code will be running at this poi...
What is a Portable Class Library?
....NET Framework 4 must be installed on your machine. This update is automatically installed with Visual Studio 2010 SP1, so you can run the Portable Class Library application without further modification on the computer that you used to develop the application. To run the application on a different c...
Adding a Method to an Existing Object Instance
... that instance will be passed as the first argument whenever the method is called.
Callables that are attributes of a class (as opposed to an instance) are still unbound, though, so you can modify the class definition whenever you want:
>>> def fooFighters( self ):
... print "fooFighter...
How does Apple know you are using private API?
...
I'm curious about the workaround of calling private methods. I think the compiler will generate call to objc_msgSend(foo, @selector(privateMethod)) for [foo privateMethod], so if Apple can detect the direct call of privateMethod they can also detect the indirec...
How to change column datatype in SQL database without losing data
...d Jul 8 '15 at 3:09
Xyed Xain HaiderXyed Xain Haider
41833 silver badges1414 bronze badges
...
Is there a performance impact when calling ToList()?
... works in case you're interested :)
A List<T> also uses a construct called a dynamic array which needs to be resized on demand, this resize event copies the contents of an old array to the new array. So it starts off small and increases in size if required.
This is the difference between the...
How to convert xml into array in php?
...l = new SimpleXMLElement($xmlString);
echo $xml->bbb->cccc->dddd['Id'];
echo $xml->bbb->cccc->eeee['name'];
// or...........
foreach ($xml->bbb->cccc as $element) {
foreach($element as $key => $val) {
echo "{$key}: {$val}";
}
}
...
How to get full path of selected file on change of using javascript, jquery-ajax
... access to the File System, however using HTML5 File API, only Firefox provides a mozFullPath property, but if you try to get the value it returns an empty string:
$('input[type=file]').change(function () {
console.log(this.files[0].mozFullPath);
});
http://jsfiddle.net/SCK5A/
So don't waste...