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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...
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
...
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...
Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...es, each one with its own application :
- Basic “Hello World”
- REST API
- JSON Serialization/Deserialization
- Photo Loading
- SQL Database Insert and Get All
Each test is repeted several times, the graphs show the average results.
Hello World
Rest API
Set of tests aimed at measuri...
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/
...
Unique Key constraints for multiple columns in Entity Framework
...rrect for data annotations :), if you want the answer for using the fluent API see Niaher's answer below stackoverflow.com/a/25779348/2362036
– tekiegirl
Oct 29 '14 at 13:37
8
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How to extract custom header value in Web API message handler?
I currently have a message handler in my Web API service that overrides 'SendAsync' as follows:
10 Answers
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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 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)
...
How can I assign an ID to a view programmatically?
...ew.
Query these child views using placeholder.findViewById(convenientInt);
API 17 introduced View.generateViewId() which allows you to generate a unique ID.
If you choose to keep references to your views around, be sure to instantiate them with getApplicationContext() and be sure to set each refe...