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NSNotificationCenter addObserver in Swift
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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...
ASP.NET MVC Controller Naming Pluralization
...For example, a UsersController makes sense if you design your routes like /api/users (all users) and /api/users/{userId} (single user)
– Levi Fuller
Mar 1 '18 at 23:14
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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 ...
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...
Android gradle: buildtoolsVersion vs compileSdkVersion
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compileSdkVersion is the API version of Android that you compile against.
buildToolsVersion is the version of the compilers (aapt, dx, renderscript compiler, etc...) that you want to use. For each API level (starting with 18), there is a matching .0...
How to enable/disable bluetooth programmatically in android
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Android BluetoothAdapter docs say it has been available since API Level 5. API Level 5 is Android 2.0.
You can try using a backport of the Bluetooth API (have not tried it personally): http://code.google.com/p/backport-android-bluetooth/
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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...
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
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JavaScript and Threads
...change in future.
Here's the relevant documentation for Gears: WorkerPool API
WHATWG has a Draft Recommendation for worker threads: Web Workers
And there's also Mozilla’s DOM Worker Threads
Update: June 2009, current state of browser support for JavaScript threads
Firefox 3.5 has web worker...
How to check edittext's text is email address or not?
...checks that field contains a valid domain name ( always passes the test in API Level < 8 )
ipAddress: checks that the field contains a valid ip address
webUrl: checks that the field contains a valid url ( always passes the test in API Level < 8 )
nocheck: It does not check anything. (Default)
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