Tutorial by Examples: en

Procedure when nothing else helps

Once a while concecuent deploys to internal tomcat start giving constant error, without any clear cause (Listener start or ClassNotFoundException). When nothing seems to cure it, this procedure saves the world: 1 delete Servers folder 2 restart Eclipse 3 create new server, add project and start...

eclipse • Tomcat deployment procedure

Configure a simple build project with Jenkins 2 pipeline script

Here we will be creating a Groovy pipeline in Jenkins 2 to do the following steps : Verify every 5 minutes if new code has been commited to our project Checkout code from SCM repo Maven compile of our Java code Run our integration tests and publish the results Here are the steps we will : ...

jenkins • Getting started with jenkins

Example Routes.js file, followed by use of Router Link in component

Place a file like the following in your top level directory. It defines which components to render for which paths import React from 'react'; import { Route, IndexRoute } from 'react-router'; import New from './containers/new-post'; import Show from './containers/show'; import Index from './c...

React • React Routing

Simple Screen Manager Usage

# A line used mostly as the first one, imports App class # that is used to get a window and launch the application from kivy.app import App # Casual Kivy widgets that reside in kivy.uix from kivy.uix.label import Label from kivy.uix.button import Button from kivy.uix.boxlayout import BoxLayo...

kivy • Using the Screen Manager

Browser extensions

Salesforce Navigator (Google Chrome) Force.com Logins (Google Chrome, Firefox) Salesforce Developer Tool Suite (Google Chrome) Salesforce Lighting Components Inspector (Google Chrome) Salesforce Developer Tool Suite (Google Chrome) Salesforce Schema Builder Expander (Google Chrome) Boostr fo...

Salesforce • Tools for Development

Limit excerpt length to 50 words

Put the following code in functions.php: function themify_custom_excerpt_length( $length ) { return 50; } add_filter( 'excerpt_length', 'themify_custom_excerpt_length', 999 ); Use 999 as the priority to ensure that the function runs after the default WordPress filter, otherwise it would ov...

WordPress • Custom exerpts with excerpt_length and excerpt_more

Adding a Read More link at the end of the excerpt

To do this, put the following code in functions.php: function custom_excerpt_more($more) { return '<a href="'. get_permalink($post->ID) . '">Read More</a>'; } add_filter('excerpt_more', 'custom_excerpt_more'); The results should look like this:

WordPress • Custom exerpts with excerpt_length and excerpt_more

Adding a few dots at the end of the excerpt

In our functions.php function new_excerpt_more( $more ) { return '.....'; } add_filter('excerpt_more', 'new_excerpt_more'); We should get this:

WordPress • Custom exerpts with excerpt_length and excerpt_more

Activate all pages in the JCR starting with the currently opened page

Create a new browser bookmark, for example, in Chrome click the star icon at the right in the address bar, make sure the Folder is Bookmarks Bar, and then click the Edit... button: In the edit box that opens paste the following code as the URL: javascript:(function(){var root=(window.location.pa...

aem • Tree Activation Bookmarklet

Hiding non-interactive content from visible display, still read by screen readers

If you were to hide a link by setting display: none in the CSS then screen readers wouldn’t find it. Instead, we position it absolutely, with clipping. CSS .offscreen { position: absolute; clip: rect(1px 1px 1px 1px); /* for Internet Explorer */ clip: rect(1px, 1px, 1px, 1px); padding: 0; b...

accessibility • Developing for Screen Reader Users

If points field value is greater than 10 then display good else average

We have a set of data We would like to see by using the following expression in the detail textbox. we can achieve the Remark =IIF(Fields!Points.Value>=10,"Good","Average")

reporting-services • IF expression

Catch-all route for enabling client-side routing

It's a good practice to encode state of Single Page Application (SPA) in url: my-app.com/admin-spa/users/edit/id123 This allows to save and share application state. When user puts url into browser's address bar and hits enter server must ignore client-side part of the requested url. If you serv...

asp.net-mvc • Routing

React Component Container

When building a React application, it is often desirable to divide components based on their primary responsibility, into Presentational and Container components. Presentational components are concerned only with displaying data - they can be regarded as, and are often implemented as, functions tha...

React • React Component Lifecycle

Open Local File / Create dynamic content in Webview

Layout.xml <WebView android:id="@+id/WebViewToDisplay" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_gravity="center" ...

Android • WebView

The Naive First Attempt

Before we begin, let's define some CSS for the examples. This is the head section of our sample. I always use border-radius and background-color when I'm testing, because it makes seeing cell divisions simple without adding any border size which could affect the size of the cells. <head> ...

twitter-bootstrap • Using Clearfix in Rows and Cols

Find nearby Bluetooth Low Energy devices

The BluetoothLE API was introduced in API 18. However, the way of scanning devices has changed in API 21. The searching of devices must start with defining the service UUID that is to be scanned (either officailly adopted 16-bit UUID's or proprietary ones). This example illustrates, how to make an A...

Android • Bluetooth and Bluetooth LE API

Accessing a UI Element From Within a Task

All UI elements created and reside in the main thread of a program. Accessing these from another thread is forbidden by the .net framework runtime. Basically it is because all UI elements are thread sensitive resources and accessing a resource in a multi-threaded environment requires to be thread-sa...

wpf • Thread Affinity Accessing UI Elements

Deployment using PM2

PM2 is a production process manager for Node.js applications, that allows you to keep applications alive forever and reload them without downtime. PM2 also enables you to manage application logging, monitoring, and clustering. Install pm2 globally. npm install -g pm2 Then, run the node.js app u...

Node.js • Deploying Node.js applications in production

Deployment using process manager

Process manager is generally used in production to deploy a nodejs app. The main functions of a process manager are restarting the server if it crashes, checking resource consumption, improving runtime performance, monitoring etc. Some of the popular process managers made by the node community are ...

Node.js • Deploying Node.js applications in production

General for loop

Most programming languages support the for-loop control structure. It is generally implemented in this way: for(init; condition; increment){ content_code(); } The above pseudocode is identical with the pseudocode below: init; start_loop: if(condition){ content_code(); increme...

loops • For loops