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Detailed instructions on getting performance set up or installed.

XAML controls may have dependency properties that can be bound to objects from DataContext or other controls. When the type of the object being bound is different from the type of the target DependencyProperty, a converter may be used to adapt one type to another. Converters are classes implementin...

Specific for <li> tags within an unordered list (<ul>): list-style: disc; /* A filled circle (default) */ list-style: circle; /* A hollow circle */ list-style: square; /* A filled square */ list-style: '-'; /* any string */ ...

If you plan to host your Django website on Heroku, you can start your project using the Heroku Django Starter Template : django-admin.py startproject --template=https://github.com/heroku/heroku-django-template/archive/master.zip --name=Procfile YourProjectName It has Production-ready configurati...

Mapping URLs to specific templates To fully grasp WordPress themes, you must understand two primary concepts: Permalinks The Template Hierarchy A permalink is a permanent, non-changing URL (or link, to a specific resource. For instance: example.com/about-us/ (a Page in WP) example.com/se...

SELECT Id, Name FROM Account This will return the Id and Name fields from the Account table. No filtering or sorting will be applied.

SELECT Name FROM User WHERE IsActive = true This will return the name of all active Users. SELECT Name, Phone FROM Contact WHERE CreatedDate >= 2016-01-01T00:00:00.000Z This will return Contacts created on or after January 1st, 2016. SELECT Id, Name FROM Account LIMIT 100 This will ret...

SELECT Id, Name FROM User ORDER BY LastName SELECT Id, Name FROM Contact ORDER BY LastModifiedDate DESC SELECT Name, Title FROM User ORDER BY Title ASC NULLS FIRST SELECT Id FROM Contact ORDER BY LastName ASC NULLS LAST, FirstName ASC NULLS FIRST

It is a common operation to need to perform a particular function over each element in a parameter pack. With C++11, the best we can do is: template <class... Ts> void print_all(std::ostream& os, Ts const&... args) { using expander = int[]; (void)expander{0, (void(...

Android 6 (API23) introduced Doze mode which interferes with AlarmManager. It uses certain maintenance windows to handle alarms, so even if you used setExactAndAllowWhileIdle() you cannot make sure that your alarm fires at the desired point of time. You can turn this behavior off for your app using...

var alphabet:Array = [ "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S...

Another way to implement item click listener is to use interface with several methods, the number of which is equal to the number of clickable views, and use overrided click listeners as you can see below. This method is more flexible, because you can set click listeners to different views and quite...

To support multiple resolutions and aspect ratios Libgdx uses the so called Viewports. There are a few types of Viewports which use different strategies to handle multiple resolutions and aspect ratios. A Viewport uses a Camera under the hood and manages it's viewportHeight and viewportWidth. You ...

HVFL is a language designed to constrain UI elements in a simple and quick fashion. Generally, VFL has an advantage over traditional UI customization in the Interface Builder because it's much more readable, accessible and compact. Here's an example of VFL, in which three UIViews are constrained f...

The Object.freeze() method is available since version 5.1. For older versions, you can use the following code (note that it also works in versions 5.1 and later): var ColorsEnum = { WHITE: 0, GRAY: 1, BLACK: 2 } // Define a variable with a value from the enum var currentColor = Co...

A lot of the value from local JVM unit tests comes from the way you design your application. You have to design it in such a way where you can decouple your business logic from your Android Components. Here is an example of such a way using the Model-View-Presenter pattern. Lets practice this out by...

Property scrollEnabled stores a Boolean value that determines whether scrolling is enabled or not. If the value of this property is true/YES, scrolling is enabled, otherwise not.The default value is true Swift scrollview.isScrollEnabled = true Objective-C scrollview.scrollEnabled = YES;

Create UIScrollView instance let scrollview = UIScrollView.init(frame: self.view.bounds) And then set these properties: scrollView.minimumZoomScale = 0.1 scrollView.maximumZoomScale = 4.0 scrollView.zoomScale = 1.0 scrollview.delegate = self as? UIScrollViewDelegate To zoom in and out im...

Redirect to within application (another action of specific controller). return $this->redirect([ 'controller' => 'myController', 'action' => 'myAction' ]); Redirect to referrer page return $this->redirect($this->referer()); Redirect to outside of application or spec...

Passing Variable in URL as a method's parameter return $this->redirect([ 'controller' => 'users', 'action' => 'profile', $id ]); Url should be looks like this http://your_app_url/users/profile/{id} in UsersController.php file in profile() method class UsersController e...