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How to specify HTTP error code?
...:
res.status(400);
res.send('None shall pass');
http://expressjs.com/4x/api.html#res.status
<=3.8
res.statusCode = 401;
res.send('None shall pass');
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Any implementation of Ordered Set in Java?
...
Take a look at the Java standard API doc. Right next to LinkedHashMap, there is a LinkedHashSet. But note that the order in those is the insertion order, not the natural order of the elements. And you can only iterate in that order, not do random access (exc...
What is token-based authentication?
...(e.g. javascript, HTML, images, etc.), and your server side is just the API.
Decoupling: you are not tied to any particular authentication scheme. The token might be generated anywhere, hence your API can
be called from anywhere with a single way of authenticating those
calls.
Mobil...
What APIs are used to draw over other apps (like Facebook's Chat Heads)?
How does Facebook create the Chat Heads on Android? What is the API to create the floating views on top of all other views?
...
Android Studio - How to Change Android SDK Path
...t", but I think it is a bug. The explanation: on default sdk path there is API 17, on the new one I have APIs 15, 18 and 19. Inside SDKs under Platform Settings, I had listed APIs 15, 17, 18, 19. After erasing the API 17 (using the red minus), the "New Project Dialog" now shows the correct list for ...
What is the difference between localStorage, sessionStorage, session and cookies?
...age and sessionStorage
localStorage and sessionStorage are relatively new APIs (meaning, not all legacy browsers will support them) and are near identical (both in APIs and capabilities) with the sole exception of persistence. sessionStorage (as the name suggests) is only available for the duration...
Has Facebook sharer.php changed to no longer accept detailed parameters?
... From Facebook: The Feed Dialog for web has been deprecated in API Version 2.0. On web, developers are encouraged to use the more modern Share Dialog, which can perform all of the same functions as these older dialogs, but can additionally publish custom Open Graph stories without requi...
NSNotificationCenter addObserver in Swift
...
It's the same as the Objective-C API, but uses Swift's syntax.
Swift 4.2 & Swift 5:
NotificationCenter.default.addObserver(
self,
selector: #selector(self.batteryLevelChanged),
name: UIDevice.batteryLevelDidChangeNotification,
object: n...
How do I discover memory usage of my application in Android?
...le which has some discussion of how memory is managed on Android:
Service API changes starting with Android 2.0
Now ActivityManager.getMemoryInfo() is our highest-level API for looking at overall memory usage. This is mostly there to help an application gauge how close the system is coming to hav...
How to read a local text file?
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After the introduction of fetch api in javascript, reading file contents could not be simpler.
reading a text file
fetch('file.txt')
.then(response => response.text())
.then(text => console.log(text))
// outputs the content of the text file
...