Tutorial by Examples: b

You can take a look at the full code in this working Plunker. In this example I use a shared service to handle the communication between the pages inside the tab (child pages) and the tab container (the component that holds the tabs). Even though you probably could do it with Events I like the shar...

Remove color from an image via ctx.globalCompositeOperation = 'color'; The amount of the effect can be controled with the alpha setting // Render the image ctx.globalCompositeOperation='source-atop'; ctx.drawImage(image, 0, 0); // set the composite operation ctx.globalCompositeOperation='...

You can use a filter to log only messages "lower" than e.g. ERROR level. But the filter is not supported by PropertyConfigurator. So you must change to XML config to use it. See log4j-Wiki about filters. Example "specific level" <appender name="info-out" class=&quo...

PrepareForSegue: func prepareForSegue(_ segue:UIStoryboardSegue, sender sender:AnyObject?) Notifies the view controller that a segue is about to be performed Parameters segue: The segue object. sender: The object that initialized the segue. Example in Swift Perform a task if the ident...

ShouldPerformSegueWithIdentifier: func shouldPerformSegueWithIdentifier(_ identifier:String, sender sender:AnyObject?) -> Bool Determines whether the segue with the specified identifier should be performed. Parameters Identifier: String that identifies the triggered segue Sender: The...

Unwind Segues Unwind Segues give you a way to “unwind” the navigation stack and specify a destination to go back to. The signature of this function is key to Interface Builder recognizing it. It must have a return value of IBAction and take one parameter of UIStoryboardSegue. The name of the ...

If the administrator creates your database for you when setting up your permissions, you can begin using it. Otherwise, you need to create it yourself: mysql> CREATE DATABASE menagerie; Under Unix, database names are case sensitive (unlike SQL keywords), so you must always refer to your datab...

Overview Gtk+ supports a workflow where the task of user interface design and the task of programming are decoupled. Although the user interface elements such as buttons, menus, layout etc. can be directly added from code, this approach not only clutters the code, but also makes changing the UI for...

Components and Props As React concerns itself only with an application's view, the bulk of development in React will be the creation of components. A component represents a portion of the view of your application. "Props" are simply the attributes used on a JSX node (e.g. <SomeComponen...

A model for a new table can be created by running the following commend from the terminal root location: phalcon model <table-name> Let us take the Model Users. SELECT There are two default functions to do select operation in phalcon, find() and findFirst() findFirst() is used to get th...

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Creating a Project with the NetBeans IDE In the following, we walk you through the creation of a Vaadin project in NetBeans and show how to run it. Installation of NetBeans and the Vaadin plugin is covered in Installing the NetBeans IDE and Plugin. Without the plugin, you can most easily create a...

To enable Cross-Origin Resource Sharing (CORS) in Apache you'll need to set at least one HTTP header which changes it (the default behaviour is to block CORS). In the following example, we're going to be setting this HTTP header inside .htaccess, but it can also be set in your site your-site.conf fi...

#include <string.h> #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <unistd.h> #include <dirent.h> #include <ctype.h> int main(int argc, char **argv) { const char *dname = (argc > 1 ? argv[1] : "."); DI...

Open Android Studio Open Your Project Click on Gradle (From Right Side Panel, you will see Gradle Bar) Click on Refresh (Click on Refresh from Gradle Bar, you will see List Gradle scripts of your Project) Click on Your Project (Your Project Name form List (root)) Click on Tasks Click on andr...

menu.xml - (res -> menu) <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" tools:context=".HomeActivity"> <item...

TextViewPlus.java: public class TextViewPlus extends TextView { private static final String TAG = "TextView"; public TextViewPlus(Context context) { super(context); } public TextViewPlus(Context context, AttributeSet attrs) { super(context, attrs)...

CustomProgressBarActivity.java: public class CustomProgressBarActivity extends AppCompatActivity { private TextView txtProgress; private ProgressBar progressBar; private int pStatus = 0; private Handler handler = new Handler(); @Override protected void onCreate(Bun...

tf.exe get /all /recursive /force /overwrite $/ Gets all files and directories, and will replace any files that are not currently checked out in the workspace (including files that have been edited).