When working on 2D/3D graphic applications, animating various objects and moving them across the screen is very often a requirement. As a programmer or designer, sometimes you would like to have the freedom to move objects not only along straight, but also along curved lines. Solution to this problem – the Bézier curve – has been known for decades. Still, people unfamiliar with curves may find them a bit confusing at first. This article is not intended to be a comprehensive analysis of Bézier curves; rather, it should give a beginner just enough knowledge to get her/him started.
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We recently developed a simple Android app that needed to run on smartphones and tablets, meaning 3-4″ phones, 7″ phonetabs with identity issues and 10″ tablets. It’s all made simple enough by the framework but some things always need a bit of tweaking.

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One important thing that needs to be setup early in every development process is logging. If you are using log4j , you have to set up properties file(s) and define Loggers, Appenders and Layouts. According to documentations “These three types of components work together to enable developers to log messages according to message type and level, and to control at runtime how these messages are formatted and where they are reported”.
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It is not uncommon to see methods that look something like this:

private List cheesesInStock = ...;

/**
 * @return an array containing all of the cheeses in the shop,
 *         or null if no cheeses are available for purchase.
 */
public Cheese[] getCheeses() {
    if (cheesesInStock.size() == 0)
        return null;
    ...
}

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C++0x specification is finally approved by ISO and the latest compilers now support most of the specification without too many bugs. One of many new features introduced is support for lambda expressions. Lambda expressions are anonymous functions that maintain state and can access variables from the enclosing scope. Well known and often used in scripting languages, they were not available in C++ until now. Read more