In this article by Munish Sethi , author of the book Jasmine Cookbook , we will see the implementation of Jasmine tests using spies.
One of the biggest features that draws developers to Ext JS is the vast array of UI widgets available out of the box. The ease with which they can be integrated with each other and the attractive and consistent visuals each of them offers is also a big attraction. No other framework can compete on this front, and this is a huge reason Ext JS leads the field of large-scale web applications. In this article by Stuart Ashworth and Andrew Duncan by authors of the book, Ext JS Essentials , we will look at how UI widgets fit into the framework's structure, how they interact with each other, and how we can retrieve and reference them. We will then delve under the surface and investigate the lifecycle of a component and the stages it will go through during the lifetime of an application.
In this article by Loiane Groner , author of the book Mastering Ext JS, Second Edition , we will start implementing the application's core features, starting with static data management. What exactly is this? Every application has information that is not directly related to the core business, but this information is used by the core business logic somehow. There are two types of data in every application: static data and dynamic data. For example, the types of categories, languages, cities, and countries can exist independently of the core business and can be used by the core business information as well; this is what we call static data because it does not change very often. And there is the dynamic data, which is the information that changes in the application, what we call core business data. Clients, orders, and sales would be examples of dynamic or core business data. We can treat this static information as though they are independent MySQL tables (since we are using MySQL as the database server), and we can perform all the actions we can do on a MySQL table.
Most systems using the Arduino have a similar architecture. They have a way of reading data from the environment—a sensor—they make decision using the code running inside the Arduino and then output those decisions to the environment using various actuators, such as a simple motor. Using three recipes from the book, Arduino Development Cookbook , by Cornel Amariei , we will build such a system, and quite a useful one—a fan controlled by the air temperature. Let's break the process into three key steps, the first and easiest will be to connect an LED to the Arduino, a few of them will act as a thermometer, displaying the room temperature. The second step will be to connect the sensor and program it, and the third will be to connect the motor. Here, we will learn this basic skills.