Objective-C for iPhone application development

iPhone is getting popular day-by-day. Naturally the demand for iPhone applications is increasing. So if you are ready to take the next big step, you can start learning how to develop software for iPhone.

The operating system used in iPhone is called iPhone OS (which is also the operating system for iPod). Unfortunately iPhone doesn't support Java like most of the smart phones. The programming language that can be used to write programs for iPhone is Objective-C. If you already know it, then you are one step ahead. Else you can start learning it. You can read this tutorial: http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/ which is recommended by many.

For resources, you must visit iPhone Developer's Center: http://developer.apple.com/iphone/ and download the iPhone SDK.

Please share your experience with iPhone application development.

Wikipedia links: iPhone, Objective-C, iPhone OS

Create PDF file in Perl

Today I tried to create a PDF file using a program. I choose the language Perl to do this task, because there should be one or more useful module for pdf creation in Perl (I shall try to do the same task using PHP and Python later).

For PDF creation I found the module PDF::Create very useful. If you want to create and/or modify a pdf file, then you can try PDF::API2.

Here is an article on pdf creation from the book PDF Hack, that uses PDF::API2 to create a pdf file: Use Perl to create PDF. Note that I had to change the sample code (line 11) my $txt = $page->hybrid; to my $txt = $page->text;

Hope you can create PDFs smoothly. Please share your experience.