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NSNotificationCenter addObserver in Swift
...idChangeNotification,
object: nil)
If your observer does not inherit from an Objective-C object, you must prefix your method with @objc in order to use it as a selector.
@objc private func batteryLevelChanged(notification: NSNotification){
//do stuff using the userInfo property of th...
Cropping an UIImage
...ully. The resulting CGImage holds a strong reference to the larger CGImage from which it was cropped. So if you want to only hang on to the cropped image and have no need for original, take a look at the other solutions.
– jsadler
Aug 22 '17 at 21:00
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C++ project organisation (with gtest, cmake and doxygen)
...simple vector class in C++. However I would like to get in to good habits from the start rather than trying to modify my workflow later on.
...
How do you see the entire command history in interactive Python?
...int readline.get_history_item(i + 1)
Note: get_history_item() is indexed from 1 to n.
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AngularJS: How to run additional code after AngularJS has rendered a template?
I have an Angular template in the DOM. When my controller gets new data from a service, it updates the model in the $scope, and re-renders the template. All good so far.
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What's wrong with using $_REQUEST[]?
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There's absolutely nothing wrong with taking input from both $_GET and $_POST in a combined way. In fact that's what you almost always want to do:
for a plain idempotent request usually submitted via GET, there's the possibility the amount of data you want won't fit in a UR...
Shadow Effect for a Text in Android? [duplicate]
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
Not the answer you're looking for? Browse other questions t...
WebView link click open default browser
...Overflow that I want to share here in case someone else needs it.
Source (from sven)
webView.setWebViewClient(new WebViewClient(){
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url != null && (url.startsWith("http://") || url.startsWith("https://"))) {...
How to check programmatically if an application is installed or not in Android?
...Installed(context, "com.whatsapp");
This answer shows how to get the app from the Play Store if the app is missing, though care needs to be taken on devices that don't have the Play Store.
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What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
...ertically/ horizontally).
RelativeLayout means based on relation of views from its parents and other views.
ConstraintLayout is similar to a RelativeLayout in that it uses relations to position and size widgets, but has additional flexibility and is easier to use in the Layout Editor.
WebView to ...