Creating a Lazarus Component

In this article by Roderick Person, author of Getting Started with Lazarus IDE, we are going to look at creating new components for Lazarus. We will do this by:

• Creating a message-logging component

• Adding properties to the components that appear in the Object Inspector window when a component is used in design time

• Adding events of the components that appear in the Object Inspector window when a component is used in design time

• Learning the basics of creating a Property Editor window

• Learning the basics of creating a Component Editor window and looking at the TCheckListBoxComponentEditor component are some examples

So let's begin.

Querying and Selecting Data

Selecting features from a geographic layer or rows from a standalone attribute table is one of the most common GIS operations. Queries are created to enable these selections, and can be either attribute or spatial queries. Attribute queries use SQL statements to select features or rows through the use of one or more fields or columns in a dataset. An example attribute query would be "Select all land parcels with a property value greater than $500,000". Spatial queries are used to select features based on some type of spatial relationship. An example might be "Select all land parcels that intersect a 100 year floodplain" or perhaps "Select all streets that are completely within Travis County, Texas". It is also possible to combine attribute and spatial queries. An example might be "Select all land parcels that intersect the 100 year floodplain and have a property value greater than $500,000".

In this article by Eric Pimpler, author of Programming ArcGIS 10.1 with Python Cookbook, we will cover the following recipes:

• Constructing proper attribute query syntax

• Creating feature layers and table views

• Selecting features and rows with the Select Layer by Attribute tool

• Selecting features with the Select by Location tool

• Combining spatial and attribute queries with the Select by Location tool

Getting Started with PrimeFaces

The purpose of the article, PrimeFaces—the rapidly evolving, JSF component suite, is to address a wide audience interested in modern, trend-setting Java or JEE web development. In this article by Mert Çalışkan and Oleg Varaksin, authors of PrimeFaces Cookbook, we will be provided with a sneak preview on some of the prime features of PrimeFaces, such as the AJAX processing mechanism and resource handling with Internationalization and Localizaiton, along with the necessary steps to implement a simple web application using PrimeFaces, which will give a head start to the user.

In this article  we will cover:

• Setting up and configuring the PrimeFaces library

• AJAX basics with Process and Update

• Internationalization (i18n) and Localization (L10n)

• Improved resource ordering

• PrimeFaces scaffolding with Spring Roo

Creating weapons for your game using UnrealScript

In this article by Dave Voyles, author of UnrealScript Game Programming Cookbook, we will learn how we can create a gun that fires homing missiles, a gun that heals pawns, and a weapon that can damage over time.

Testing your App

While the subject of testing could span whole books and there are many books on the subject indeed, we will offer a framework for testing HTML5 enterprise applications as well as an outline of cogent topics that will serve as a point of departure for further study. Different testing tools come with their own particular set of idioms; we will cover the concepts underlying those idioms.

This article by Nehal Shah and Gabriel José Balda Ortíz, authors of HTML5 Enterprise Application Development, will cover the following:

• Unit testing

• Functional testing

• Browser testing

• Continuous integration

Installing and customizing Redmine

In this article by Andriy Lesyuk, author of Instant Google Drive Starter, you will learn how to install and customize Redmine.

For installing Redmine from a package we will use Ubuntu Server 12.04 LTS. Why Ubuntu? Because it's one of the most popular Linux distributions nowadays and Ubuntu is widely used along with Redmine (for example, the TurnKey Linux is also based on Ubuntu).