Programming With Ruby Episode 6, Strings

In this episode you learn about using strings in Ruby. More specifically: String literals, string expressions, useful string methods, regular expressions, and getting user input

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Original Post and Transcript: http://manwithcode.com/101/programming-with-ruby-episode-6-strings/

Category:

Education

Tags:

• ruby
• strings
• expressions
• literals
• methods
• regular expressions
• user input

[parks709]

I don't really understand the scan expression. Could you explain more on what (/../) or (/\w\w/) do?

[manwithcode]

@parks709 What's surrounded by the "/"s is called a regular expression. It's a way of processing text. "." means, select any character. "\w" is for whitespace. Regular expressions are a huge topic, so just do a Google search to find out more.

[CaptainGibbons]

You sir, have just earned yourself a subscriber.

[manwithcode]

@CaptainGibbons Excellent! :)

[whitedragon812]

I am using latest version of ruby interactive on windows 7. When I type "Hello".each_char do [x], the program is giving me an error that says undefined variable. Is there a way to fix this?

[manwithcode]

@whitedragon812 If the code looks the way you posted it in your comments, the problem is a syntax error. There aren't supposed to be square brackets around the x variable, it's supposed to be the pipe character (usually found above the enter key).

It should look like this: |x|

Not this: [x]

[ccofmight]

@CaptainGibbons lol what a coincidence I subscribed also. . . and I know you XD

[manwithcode]

@cashjamesPremium1 I haven't been able to reproduce the problem you're encountering, are you sure you've typed the code in correctly?

[cashjamesPremium1]

@manwithcode i am Running the Newest Version ,the latest version

[cashjamesPremium1]

@manwithcode i am using windows 7 Ultimate