The root Directory in Linux <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
The root directoy is on top of all other directories. Its name is /. We can find within this directory multiple subdirectories. One of them is home. The home directory includes subdirectories named after the user. The name of each one of them is the username of a specific user.
The Ubuntu Software Center <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>BIZ</a></font>
The Ubuntu Software Center allows developers to distribute their applications for the Ubuntu operating system in a secure and friendly way. The Ubuntu Software Center takes care of the whole billing and distributing process and simplify the process both for the developers and the users.
Debugging Code in Dart <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
The Dart Editor together with the Dartium web browser allow us to use breakpoints in order to debug step by step. We can execute our code in the dartium web browser and track it step by step using breakpoints in the Dart Editor.
Hello World (Command Line) in Dart <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
We can use the dart utility in order to compile and execute code we write in Dart when using the command line. main() { print(“hello world!”); } The following video clip shows the execution of this simple code sample. The video clip shows how to use this command when working on Mac. On other operating […]
The Bright Future of Dart <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>BIZ</a></font>
It is very difficult to forcast when it comes to technologies. Nevertheless, as of today I have every reason to believe that Dart might become one of the most popular programming languages in the world. In this post I will try to explain this bombastic conclusion. It is fairly clear that more and more applications […]
Hello World (Web Browser) in Dart <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
The code we develop in Dart can be executed in a web browser. It can be a web browser that already includes a Dart VM, such as the Chromium, or a simple web browser. When the web browser doesn’t include a Dart VM the code we wrote in Dart will be compiled into JavaScript. The […]
Concurrency with Isolates in Dart <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
Dart is a single threaded programming language. Each isolate is a unit of work. It has its own memory allocation. Sharing memory between isolates is not possible. Each isolate can pass over messages to the others. When an isolate receives a message it processes it in a way similar to events handling. import “dart:isolate”; var […]
Function as First Class Objects <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
Similarly to JavaScript, we can pass over functions as objects. We can pass a function as a argument to a another function and we can store a function in a variable. The possibility to define anonymous functions and pass them over as arguments to other functions simplifies the code. goodMorning(str) => print(“Good Morning $str”); goodEvening(str) […]
Factory Constructors in Dart <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
Appart of having a constructors mechanism similarly to Java and C#, Dart supports the concept of factory constructors. We can define a base class (can also be an abstract class) and provide a factory constructor to be used when a default concrete instance is required. abstract class IRobot { String talk(String str); factory IRobot() { […]
Class Based OOP in Dart <font size=-2><a href=http://www.lifemichael.com/en/?page_id=73 target=_blank>PRO</a></font>
The Dart programming language uses classes and interfaces similarly to Java, C# and PHP. Dart supports single inheritance similarly to Java, C# and PHP. Dart supports multiple interfaces implementation similarly to Java, C# and PHP. As in Java and in C# every class inherits (by default) from the Object class. The classes can have public […]