Comments on: Another good use of interfaces http://www.zedia.net/2008/another-good-use-of-interfaces/ Flash, ActionScript, SEO and everything in between Sat, 04 Feb 2012 08:16:43 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: james http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-7609 james Thu, 21 Jul 2011 11:14:03 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-7609 interfaces are great for polymorphism where necessary, but it used to be considered a bad idea, as class abstraction can become a nightmare in terms of tight coupling and dependencies. The really useful thing that I find for them is when defining a contract between you the developer and the developer who implements your code. If you specify an interface then when the developer comes to extend the class that implements that interface they are forced to stick to the implementation details that you have defined in the class. This allows for the class to be extended whilst maintaining the same method signatures so that the compiler can allocate memory without problems in the case of run time type identification etc. interfaces are great for polymorphism where necessary, but it used to be considered a bad idea, as class abstraction can become a nightmare in terms of tight coupling and dependencies. The really useful thing that I find for them is when defining a contract between you the developer and the developer who implements your code. If you specify an interface then when the developer comes to extend the class that implements that interface they are forced to stick to the implementation details that you have defined in the class. This allows for the class to be extended whilst maintaining the same method signatures so that the compiler can allocate memory without problems in the case of run time type identification etc.

]]> By: Håvard Terland http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-6238 Håvard Terland Sat, 12 Mar 2011 14:58:04 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-6238 I was afraid of interfaces, before I found this! Favorited + liked. I was afraid of interfaces, before I found this! Favorited + liked.

]]> By: Interface trick (main swf –> load external swf and want to call it function) « CODE@蝴蝶。夢 http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-5310 Interface trick (main swf –> load external swf and want to call it function) « CODE@蝴蝶。夢 Fri, 23 Jul 2010 03:33:33 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-5310 [...] http://www.zedia.net/2008/another-good-use-of-interfaces/ [...] [...] http://www.zedia.net/2008/another-good-use-of-interfaces/ [...]

]]> By: philmill http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-4761 philmill Tue, 26 Jan 2010 22:26:40 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-4761 I never thought about using an interface this way. I too had issues importing the class of the external swf and trying to cast it without errors. Thank you. I never thought about using an interface this way. I too had issues importing the class of the external swf and trying to cast it without errors. Thank you.

]]> By: Hadi http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-3935 Hadi Wed, 26 Aug 2009 17:02:56 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-3935 Thanks for sharing, I've been shifted to AS3 for 6 month and up to this moment I was afraid of interfaces but now, I will be using it in my projects, it's surely great. thank you Thanks for sharing, I’ve been shifted to AS3 for 6 month and up to this moment I was afraid of interfaces but now, I will be using it in my projects, it’s surely great. thank you

]]> By: ryan galax http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-3926 ryan galax Fri, 21 Aug 2009 20:37:36 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-3926 great stuff here thanks a lot !!! great stuff here

thanks a lot !!!

]]> By: How to use interface in ActionScript 3 | Details about interfaces in AS3 | zedia flash blog http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-3356 How to use interface in ActionScript 3 | Details about interfaces in AS3 | zedia flash blog Wed, 04 Mar 2009 16:12:23 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-3356 [...] Another good use of interfaces [...] [...] Another good use of interfaces [...]

]]> By: zedia.net http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-3270 zedia.net Mon, 19 Jan 2009 21:21:55 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-3270 hehe Nah I meant the main movie because the main movie is loading each sections. But in the case of a preloader, your three point would be exact. Read this other post for more information about complex preloaders: http://www.zedia.net/2008/external-preloader-more-complex-cases/ hehe

Nah I meant the main movie because the main movie is loading each sections. But in the case of a preloader, your three point would be exact.

Read this other post for more information about complex preloaders:
http://www.zedia.net/2008/external-preloader-more-complex-cases/

]]> By: sideDoor http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-3269 sideDoor Mon, 19 Jan 2009 21:04:30 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-3269 I meant: Keep up the great work! I meant: Keep up the great work!

]]> By: sideDoor http://www.zedia.net/2008/another-good-use-of-interfaces/comment-page-1/#comment-3267 sideDoor Mon, 19 Jan 2009 08:44:46 +0000 http://www.zedia.net/2008/another-good-use-of-interfaces/#comment-3267 Above, when you wrote: "So in my external swf document class I made certain it implemented the interface I was going to us and in my main movie I type casted the loader.content to that interface (Type)." ...did you not mean... "...and in my PRELOADER movie I type casted the loader.content to that interface...", instead of main movie? (Main movie is what you originally declared to be the "shell" movie of your application). In this case, I gather that you're using: 1. Actions layer of the preloader.swf contains the preloader code and loads the shell movie. 2. On complete, you run the closing animation of the preloader, and when complete, you call an init() method of the document class from the loaded. 3. But in order to have access to the document class init() method, you need to access it through type-casting the loader.content property to an interface that ensures the init() method? I'm not totally clear here: Is there anyway you can show the classes involved in a simple implementation or a UML diagram or post a zip of the structure? Thanks very much! Keep of the great work! sd Above, when you wrote:

“So in my external swf document class I made certain it implemented the interface I was going to us and in my main movie I type casted the loader.content to that interface (Type).”

…did you not mean…

“…and in my PRELOADER movie I type casted the loader.content to that interface…”, instead of main movie? (Main movie is what you originally declared to be the “shell” movie of your application).

In this case, I gather that you’re using:

1. Actions layer of the preloader.swf contains the preloader code and loads the shell movie.
2. On complete, you run the closing animation of the preloader, and when complete, you call an init() method of the document class from the loaded.
3. But in order to have access to the document class init() method, you need to access it through type-casting the loader.content property to an interface that ensures the init() method?

I’m not totally clear here: Is there anyway you can show the classes involved in a simple implementation or a UML diagram or post a zip of the structure?

Thanks very much! Keep of the great work!
sd

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