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How to check for an undefined or null variable in JavaScript?
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You have to differentiate between cases:
Variables can be undefined or undeclared. You'll get an error if you access an undeclared variable in any context other than typeof.
if(typeof someUndeclaredVar == whatever) // works
if(som...
Python unittest - opposite of assertRaises?
I want to write a test to establish that an Exception is not raised in a given circumstance.
10 Answers
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How to detect if app is being built for device or simulator in Swift
In Objective-C we can know if an app is being built for device or simulator using macros:
20 Answers
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Traits in PHP – any real world examples/best practices? [closed]
...e application for traits when writing clean code.
Instead of using traits to hack code into a class it is better to pass in the dependencies via the constructor or via setters:
class ClassName {
protected $logger;
public function __construct(LoggerInterface $logger) {
$this->lo...
Sending HTTP POST Request In Java
...) {
// do something useful
}
}
Original Answer:
I recommend to use Apache HttpClient. its faster and easier to implement.
HttpPost post = new HttpPost("http://jakarata.apache.org/");
NameValuePair[] data = {
new NameValuePair("user", "joe"),
new NameValuePair("password", "blo...
How to avoid isset() and empty()
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For those interested, I have expanded this topic into a small article, which provides the below information in a somewhat better structured form: The Definitive Guide To PHP's isset And empty
IMHO you should think about not just making the app "E_NOTICE compatible"...
What are the best JVM settings for Eclipse? [closed]
...e Sun proprietary options may be involved).
(by "optimized", I mean able to run a full-fledge Eclipse on our crappy workstation at work, some old P4 from 2002 with 2Go RAM and XPSp3. But I have also tested those same settings on Windows7)
Eclipse.ini
WARNING: for non-windows platform, use the...
How do I prevent node.js from crashing? try-catch doesn't work
From my experience, a php server would throw an exception to the log or to the server end, but node.js just simply crashes. Surrounding my code with a try-catch doesn't work either since everything is done asynchronously. I would like to know what does everyone else do in their production servers.
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iOS app error - Can't add self as subview
I received this crash report, but I don't know how to debug it.
19 Answers
19
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How to download HTTP directory with all files and sub-directories as they appear on the online files
There is an online HTTP directory that I have access to. I have tried to download all sub-directories and files via wget . But, the problem is that when wget downloads sub-directories it downloads the index.html file which contains the list of files in that directory without downloading the fil...