http://idhana.com Making happy users! Wed, 23 Nov 2011 06:58:10 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 http://idhana.com/2011/11/22/design-pattern-template-in-php/ http://idhana.com/2011/11/22/design-pattern-template-in-php/#comments Wed, 23 Nov 2011 06:18:40 +0000 Dhana http://idhana.com/?p=568 Next in the Head First Design Patterns series is the Template Pattern. The template pattern defines the skeleton of an algorithm in a method and defers some of the implementation of the steps to the subclasses. The subclasses can redefine certain steps of the algorithm without changing the algorithm's structure.]]> http://idhana.com/2011/11/22/design-pattern-template-in-php/feed/ 0 http://idhana.com/2011/11/18/design-pattern-state-in-php/ http://idhana.com/2011/11/18/design-pattern-state-in-php/#comments Sat, 19 Nov 2011 06:19:25 +0000 Dhana http://idhana.com/?p=572 Next on from the Head First Design Patterns is the "State Pattern". The State Pattern allows an object to alter its behavior when its internal state changes. By altering its behavior, the object can perform a different set of operations. To truly understand this pattern, let's take a look at an example. A sales order can have many different states such as "New Order", "Invoicing", "Processing", "Shipped". Before the sales order can be moved forward to a different state, there are strict rules that need to be obeyed.]]> http://idhana.com/2011/11/18/design-pattern-state-in-php/feed/ 0 http://idhana.com/2011/11/16/design-pattern-decorator-in-php/ http://idhana.com/2011/11/16/design-pattern-decorator-in-php/#comments Thu, 17 Nov 2011 05:08:03 +0000 Dhana http://idhana.com/?p=560 Now, on the next series from the Head First Design Patterns book - the decorator pattern. The decorator pattern is used to attach additional responsibilities to an object dynamically. This provides a more flexible alternative to subclassing in order to add on more functionality. ]]> http://idhana.com/2011/11/16/design-pattern-decorator-in-php/feed/ 0 http://idhana.com/2011/11/10/design-pattern-facade-in-php/ http://idhana.com/2011/11/10/design-pattern-facade-in-php/#comments Fri, 11 Nov 2011 05:32:55 +0000 Dhana http://idhana.com/?p=564 Continuing with the Head First Design Patterns book is the facade pattern. Facade is another design pattern in PHP. The facade pattern is used to provide a simplified interface and to hide the complexity of the actual work going on behind. When does the facade get used? The most basic example is your computer. Say you have Windows 7. Windows 7 provides an interface for you to find your files, to change your background and so forth. But beneath Windows 7, there are multiple independent applications that actually do the work, but Windows 7 provides a unified theme for all these interactions.]]> http://idhana.com/2011/11/10/design-pattern-facade-in-php/feed/ 0 http://idhana.com/2011/11/07/design-pattern-adapter-in-php/ http://idhana.com/2011/11/07/design-pattern-adapter-in-php/#comments Tue, 08 Nov 2011 05:06:00 +0000 Dhana http://idhana.com/?p=555 The next part in the Head First Design Pattern series covers the "Adapter Pattern". Say for example you worked on an API. The API is out in the wild and is being used widely. Then the changes for the API comes rolling in and you have to redesign the implementation. But, since you already have users using the API, you need to resort to a less disruptive solution. What do you do? Rewrite the old functions? An easier way would be to create an interface that would convert the old public interface of your API to the new interface. ]]> http://idhana.com/2011/11/07/design-pattern-adapter-in-php/feed/ 0 http://idhana.com/2011/10/31/design-pattern-command-in-php/ http://idhana.com/2011/10/31/design-pattern-command-in-php/#comments Tue, 01 Nov 2011 03:57:14 +0000 Dhana http://idhana.com/?p=551 The next pattern from the Head First Design Patterns book is the Command Pattern. The command pattern allows decoupling of an action's requester and the actual object that performs the action.]]> http://idhana.com/2011/10/31/design-pattern-command-in-php/feed/ 0 http://idhana.com/2011/10/26/design-pattern-singleton-in-php/ http://idhana.com/2011/10/26/design-pattern-singleton-in-php/#comments Thu, 27 Oct 2011 05:43:38 +0000 Dhana http://idhana.com/?p=544 This is the third of my Head First Design Pattern post. This time, I am going to be porting the Singleton pattern from Java to PHP. The Singleton pattern is used to create one of a kind object where there should only be a single instance. i.e. thread pools, logging, caching and etc. It also gives a global point of access to the rest of the application to access the instance. ]]> http://idhana.com/2011/10/26/design-pattern-singleton-in-php/feed/ 0 http://idhana.com/2011/10/17/design-pattern-observer-in-php/ http://idhana.com/2011/10/17/design-pattern-observer-in-php/#comments Tue, 18 Oct 2011 05:33:01 +0000 Dhana http://idhana.com/?p=537 My second design pattern is the observer. As mentioned in the first design blog entry, the code comes from Head First Design Patterns.]]> http://idhana.com/2011/10/17/design-pattern-observer-in-php/feed/ 0 http://idhana.com/2011/10/12/design-pattern-strategy-in-php/ http://idhana.com/2011/10/12/design-pattern-strategy-in-php/#comments Thu, 13 Oct 2011 06:37:00 +0000 Dhana http://idhana.com/?p=533 As part of my ongoing self education, I decided to delve more into design patterns to fully appreciate the art of software design. My book of choice for this learning process was "Head First Design Patterns". As the code samples were in Java, I decided to port the code to PHP so that others who are interested in the book, but are more familiar with PHP can see how it could be achieved with equal ease.]]> http://idhana.com/2011/10/12/design-pattern-strategy-in-php/feed/ 1 http://idhana.com/2011/08/03/boost-me-an-html5-app-in-unbounded-programming/ http://idhana.com/2011/08/03/boost-me-an-html5-app-in-unbounded-programming/#comments Thu, 04 Aug 2011 04:40:57 +0000 Dhana http://idhana.com/?p=514 In my day job, I have to be pragmatic. That means although I am eager to try out new things right away, I have to weigh the pros and cons and the impact it might cause my unsuspecting users. I need to think about backward compatibility, about supporting browsers as old as Father Time and the list never ends. Although those daily exercises provide challenging and intriguing ways of working with old and new technology, I admit I always dream about how it would be to work in a world where IE6 or even IE7 is merely a dream, where I could care less of using a library to achieve cross browser compatibility and blah blah blah …]]> http://idhana.com/2011/08/03/boost-me-an-html5-app-in-unbounded-programming/feed/ 0 http://idhana.com/2011/07/31/what-to-do-when-setattribute-does-not-work-on-dropdowns/ http://idhana.com/2011/07/31/what-to-do-when-setattribute-does-not-work-on-dropdowns/#comments Sun, 31 Jul 2011 08:49:14 +0000 Dhana http://idhana.com/?p=511 While working on my personal project this weekend (a girl's got to have some fun sometimes), I discovered a rather peculiar behavior in a few different browsers I was testing my program with. I had a dropdown that I was setting a preselected value dynamically using Javascript using the setAttribute method.]]> http://idhana.com/2011/07/31/what-to-do-when-setattribute-does-not-work-on-dropdowns/feed/ 0 http://idhana.com/2011/02/15/facebook-javascript-app-authorization-iframe-tab-application/ http://idhana.com/2011/02/15/facebook-javascript-app-authorization-iframe-tab-application/#comments Wed, 16 Feb 2011 05:46:20 +0000 Dhana http://idhana.com/?p=505 I have been working a lot recently with the Facebook API at work. Unfortunately, I have been encountering a steep learning curve for Facebook API due to the lack of documentation and good sample code. So, here I have decided to provide little snippets of code that will help someone in their Facebook journey. This will hopefully be the first of many installations.]]> http://idhana.com/2011/02/15/facebook-javascript-app-authorization-iframe-tab-application/feed/ 7 http://idhana.com/2010/12/09/a-primer-of-css-specificity/ http://idhana.com/2010/12/09/a-primer-of-css-specificity/#comments Fri, 10 Dec 2010 06:11:26 +0000 Dhana http://idhana.com/?p=502 Ever get confused about CSS? Wonder why certain style rules somehow override each other although you specified the rule later? You spend hours commenting out code, then uncommenting it. The problem still persists. How is that possible? Well, here's a primer to get your head around CSS specificity.]]> http://idhana.com/2010/12/09/a-primer-of-css-specificity/feed/ 0 http://idhana.com/2010/12/07/brandcaster-savings-gallery/ http://idhana.com/2010/12/07/brandcaster-savings-gallery/#comments Wed, 08 Dec 2010 05:39:35 +0000 Dhana http://idhana.com/?p=489 Brandcaster Savings Gallery is an Ajax based coupon delivery system for affiliates that allows end users to display coupons and earn money on their personal websites. Compared to the traditional affiliate system at Coupons.com where an affiliate needs to be a large entity to actually get a custom microsite, any long tail affiliate can easily sign up for Brandcaster and place coupons on their site. ]]> http://idhana.com/2010/12/07/brandcaster-savings-gallery/feed/ 0 http://idhana.com/2010/11/11/ie-third-party-cookie-drama/ http://idhana.com/2010/11/11/ie-third-party-cookie-drama/#comments Thu, 11 Nov 2010 07:06:07 +0000 Dhana http://idhana.com/?p=479 I might lament that IE6 is still around after 9 years and IE's Javascript engine is just much much slower than the other browsers , but sometimes I still marvel at the ways it makes me work hard for my dough.]]> http://idhana.com/2010/11/11/ie-third-party-cookie-drama/feed/ 0 http://idhana.com/2010/11/07/save-to-card/ http://idhana.com/2010/11/07/save-to-card/#comments Mon, 08 Nov 2010 05:58:19 +0000 Dhana http://idhana.com/?p=487 The Save To Card feature is a offered by Coupons.com. Users can add online coupons onto their store loyalty cards such as Safeway, Vons and Genuardi's. To redeem, the user simply has to show the card when checking out and the coupons are automatically redeemed at checkout at the point of sale.]]> http://idhana.com/2010/11/07/save-to-card/feed/ 0 http://idhana.com/2010/09/27/whats-new/ http://idhana.com/2010/09/27/whats-new/#comments Tue, 28 Sep 2010 05:25:47 +0000 Dhana http://idhana.com/?p=478 http://idhana.com/2010/09/27/whats-new/feed/ 0 http://idhana.com/2010/09/27/on-demand-javascript/ http://idhana.com/2010/09/27/on-demand-javascript/#comments Tue, 28 Sep 2010 05:10:59 +0000 Dhana http://idhana.com/?p=473 As Ajax application start becoming larger and larger, you will need to come up with ways to present a user interface to your users in a timely manner instead of making your users wait for all your code to download. In today's fast moving world, slow loading applications have become a user's nightmare.]]> http://idhana.com/2010/09/27/on-demand-javascript/feed/ 0 http://idhana.com/2009/09/29/finemoments/ http://idhana.com/2009/09/29/finemoments/#comments Wed, 30 Sep 2009 03:09:04 +0000 Dhana http://idhana.com/?p=465 Finemoments is a site that sells baby announcement cards for those who appreciate aesthetic clean lines and classic styles. Working with the owner and an independent SEO consulting company, the site's content and layout was improved to increase its ranking in search engines. ]]> http://idhana.com/2009/09/29/finemoments/feed/ 0 http://idhana.com/2009/08/29/inwithfitness-physical-tracking/ http://idhana.com/2009/08/29/inwithfitness-physical-tracking/#comments Sun, 30 Aug 2009 02:56:10 +0000 Dhana http://idhana.com/?p=459 When InWithFitness was first launched, the fitness tracking system used the traditional method of posting the data back to the server whenever a user added an exercise. Although this worked, we realize that we needed a better method to provide a more pleasant user experience to our members. One that didn’t always reload the page when drilling down for example. For instance, cardio workouts were divided into classes and each class had it’s own set of unique exercises. In the old way, when a member selected a class, the page would reload with the new dataset for the exercises.]]> http://idhana.com/2009/08/29/inwithfitness-physical-tracking/feed/ 0