Tutorial by Examples: s

Install Chrome by first considering which version to use, relevant if you are going to be doing Web Development: Google Chrome releases major versions about every 6 weeks and provides access to multiple versions of the product as they are being stabilized. This process is done in a series of channe...

Getting installed on Windows 10 is as easy as it's ever been, and despite (true) rumours flying around regarding Windows 10 being the last 'normal' version of Windows, it has and always will stay the same process. Installing a new version Get the windows image (Go straight to step 4 if you have ...

For efficiency, Prolog code is typically compiled to abstract machine code before it is run. Many different abstract machine architectures and variants have been proposed for efficient execution of Prolog programs. These include: WAM, the Warren Abstract Machine TOAM, an abstract machine used i...

As long as you have an internet connection, you can read images from an hyperlink I=imread('https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-logo.png');

In this example we illustrate how to take a double real-type 3D matrix from MATLAB, and pass it to a C double* array. The main objectives of this example are showing how to obtain data from MATLAB MEX arrays and to highlight some small details in matrix storage and handling. matrixIn.cpp #include...

To retreive the screens width and height in pixels, we can make use of the WindowManagers display metrics. // Get display metrics DisplayMetrics metrics = new DisplayMetrics(); context.getWindowManager().getDefaultDisplay().getMetrics(metrics); These DisplayMetrics hold a series of informatio...

To get the screens density, we also can make use of the Windowmanagers DisplayMetrics. This is a quick example: // Get density in dpi DisplayMetrics metrics = new DisplayMetrics(); context.getWindowManager().getDefaultDisplay().getMetrics(metrics); int densityInDpi = metrics.densityDpi;

Some applications that use Hibernate generate a huge amount of SQL when the application is started. Sometimes it's better to enable/disable the SQL log in specific points when debugging. To enable, just run this code in your IDE when you are debugging the aplication: org.apache.log4j.Logger.getLog...

Type switches can also be used to get a variable that matches the type of the case: func convint(v interface{}) (int,error) { switch u := v.(type) { case int: return u, nil case float64: return int(u), nil case string: return strconv(u) default: ...

Generally, if we want to remove an element from an array, we need to know it's index so that we can remove it easily using remove(at:) function. But what if we don't know the index but we know the value of element to be removed! So here is the simple extension to an array which will allow us to re...

# models fit1 <- lm(mpg ~ wt, data = mtcars) fit2 <- lm(mpg ~ wt+hp, data = mtcars) fit3 <- lm(mpg ~ wt+hp+cyl, data = mtcars) # export to html texreg::htmlreg(list(fit1,fit2,fit3),file='models.html') # export to doc texreg::htmlreg(list(fit1,fit2,fit3),file='models.doc') Th...

Using Angular markup like {{hash}} in a src attribute doesn't work right. The browser will fetch from the URL with the literal text {{hash}} until Angular replaces the expression inside {{hash}}. ng-src directive overrides the original src attribute for the image tag element and solves the problem ...

As of IntelliJ IDEA version 2016.2, and IdeaVim version 0.46, IntelliJ's native option for showing line numbers is ineffective. When clicking Show line numbers, the line numbers immediately show and disappear. This problem is caused by a bug in the IdeaVim plugin, which can be resolved by using the...

By default, some keystrokes that are useful in Vim contradict with the keystrokes of IntelliJ. For example, ^R in Vim is 'redo', but in IntelliJ it's the shortcut for Run To decide which program interprets the keystroke, go to Preferences -> Other Settings -> Vim Emulation and choose which k...

You can save the layout of your tabs and windows to standardize your work environment. The layouts menu can be found in the upper right corner of Unity Editor: Unity ships with 5 default layouts (2 by 3, 4 Split, Default, Tall, Wide) (marked with 1). In the picture above, aside from default layo...

PriorityQueue is a data structure. Like SortedSet, PriorityQueue sorts also its elements based on their priorities. The elements, which have a higher priority, comes first. The type of the PriorityQueue should implement comparable or comparator interface, whose methods decides the priorities of the ...

public class CustomTextView extends TextView { private float strokeWidth; private Integer strokeColor; private Paint.Join strokeJoin; private float strokeMiter; public CustomTextView(Context context) { super(context); init(null); } public ...

The following code makes the UI unresponsive for a short while after the button click, since too many Platform.runLater calls are used. (Try scrolling the ListView immediately after the button click.) @Override public void start(Stage primaryStage) { ObservableList<Integer> data = FXCol...

The java.util.LinkedList class, while implementing java.util.List is a general-purpose implementation of java.util.Queue interface too operating on a FIFO (First In, First Out) principle. In the example below, with offer() method, the elements are inserted into the LinkedList. This insertion operat...

Detailed instructions on getting performance set up or installed.