Open Source In-Memory Databases INFO
Using an in-memory database we get most of the data saved on the main memory instead of having it saved using the hard disk storage mechanism. The main advantage of using an in memory database is the excellent performance we can achieve. There are many in-memory databases we can use. Some of them are available […]
Parsing JSON in JavaScript PRO
There are many cases in which we need to parse JSON data our code receives. When writing our code in JavaScript parsing the JSON data is fairly simple. We just need to invoke the parse() function on the JSON object, as in the following code sample. The JSON object is available in most modern web […]
Collie.js Jump Start PRO
The Collie.js JavaScript library allows us to create simple 2D graphics animations. The Collie.js library indirectly uses HTML5 canvas based graphics capabilities. The following code sample shows how simple it is to use this library. The animation uses a simple image file. <!DOCTYPE html> <html> <head> <title>collie.js demo</title> <script type=”text/javascript” src=”http://jindo.dev.naver.com/collie/deploy/collie.min.js”></script> </head> <body> <div id=”drawingarea”></div> […]
Hammer.js Jump Start PRO
The Hammer.js JavaScript library allows us to handle gesture touch events that take place when running our code on a touch screen device. The following code sample shows how simple it is to use this library. You just need to pass over the name of the gesture touch event you want to handle and the […]
Swipe.js Jump Start PRO
Swipe.js is one of the most popular JavaScript libraries that allow us to get a responsive slider in our web page. The following code sample shows how simple it is to use this JavaScript library. It includes 4 images that were prepared in advance. <!DOCTYPE html> <html> <head> <title>swipe.js demo</title> <script type=”text/javascript” src=”swipe.js”></script> <style> .swipe […]
The Decorator Design Pattern in JavaScript PRO
The decorator design pattern was created in order to allow us adding new functionality to an already existing class without extending it. The decorator design pattern was created for those cases in which we cannot extend the class. The following code sample shows a simple demo for implementing the decorator design pattern in JavaScript. <!DOCTYPE […]
The PhoneGap window.device Object PRO
The PhoneGap JavaScript library adds new properties to the window global object. One of them is the device property. The device property holds a reference for an object that describes the device. The following code sample shows how simple it is to use this object in order to get detailed information about the device. <!DOCTYPE html> <html> […]
The PhoneGap deviceready Event PRO
When using the PhoneGap JavaScript library we must make sure the device is ready before we start calling the various PhoneGap functions. In order to verify the device is ready we should hook up with the ‘deviceready’ event. The following code sample shows how simple it is to hook up with this event. If you […]
Java 8 Lambda Expressions PRO
When dealing with an interface that includes one method only and the sole purpose of that interface is to allow us passing over functionality to another part of our program we can use the lambda expression as an alternative for the anonymous inner class. The lambda expression includes a comma separated list of formal parameters enclosed […]
PHP 5.5 New Features PRO
PHP 5.5 adds many new improvements. Most of them don’t have any impact on code that was written in according with PHP 5.4. We can now get the fully qualifies name of a class by appending its name with the ::class keyword. This new feature is especially relevant when using namespaces. <?php namespace com\lifemichael\samples; class […]