Name: [799] chingav
Member: 92 months
Authored: 6 videos
Description: Chinmoy is a computer engineering student at The University of Texas at Austin. His hobbies are tennis and handball. His programming blog is located at http://gavmacprogramming.wordpress.com/screencasts/ ...

Ruby Introductions [ID:072]

a series of video-tutorials by chingav

Join Chinmoy Gavini as he takes you through the early stages of Ruby programming.

Video Tutorials

1. Introduction to Ruby I

This video is a basic introduction to Ruby. It starts out with showing some of the basic reflection capabilities of Ruby such as (10**10).class. Then I talk about indefinite chaining of methods. Other topics are if...elsif...else statements, method syntax, working with Arrays and Hashes, Hash literals, nil, and blocks, and a basic introduction to accessing Ruby documentation using "ri". Link to s [...]

2. Introduction to Ruby II

This video is about creating one's own classes. I walk through a bioinformatics class I ported from here: http://www.onlamp.com/pub/a/python/2002/10/17/biopython.html (Oreilly online's Beginning Python for Bioinformatics). I talk about def initialize, instance variables, class variables, and a very quick note on regular expressions(which I talk more about in the third video). Link to src: http:// [...]

3. Introduction to Ruby III

I talk about Deep Copy versus Shallow Copy, some Regular Expressions basics(including object-oriented regular expression idioms), implementing to_s in user classes, using case statements, Ranges, File input, single quote vs. double quote strings. Link to src: http://gavmacprogramming.wordpress.com/2007/04/21/ruby-scripts-related-to-screencasts/

4. Introduction to Ruby IV

I talk about marshaling(serialization), attr_reader, and an introduction but don't finish showing an existing example of implementing each in one's own class. Link to src: http://gavmacprogramming.wordpress.com/2007/04/21/ruby-scripts-related-to-screencasts/

5. Introduction to Ruby V

I talk briefly about how CSV Reader includes Enumerable and defines each. I talk about extracting information from a typical log file. I give an extended example(long but not that complicated) of Distributed Ruby, and point viewers to the first edition of Programming Ruby by Dave Thomas. Link to src: http://gavmacprogramming.wordpress.com/2007/04/21/ruby-scripts-related-to-screencasts/

6. Introduction to Ruby VI: Debugging and Unit Testing

This screencast shows to debug a ruby program using the standard Ruby debugger. It also shows unit testing, a very simple TCP Server, an an introduction to some Ruby/Tk code which I will develop in the next screencast. There is more than one source file for the video, so you can find the zip file, labeled screencast_scripts.zip at my blog. Here is the link---sourcelink

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Educating the Open-source Community With Showmedo

Although as important as the software it supports, education and documentation are relatively neglected in the Open-source world. Coders love to code, and explaining how best to use or improve the software tends to be deferred or even sidelined.

At Showmedo we believe the community can play a vital role here and also say thanks for the tools and software that make our lives easier. If you have a piece of software you love or a programming langugage you are enthusiastic about, why not make a screencast showing others how to use it? All the stuff you wish you'd been told, the tips, tricks, insights that would have saved you time and frustration.

Screencasting is easier than you think, and we're happy to help you. You can emailus for advice or just use some of the how-to screencasts on the site. This screencasting learning-pathis a good place to start.

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