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comp.lang.ruby

analyzer.rb cannot run.

Genocide Law

2/3/2009 11:07:00 AM

Hi, I'm kinda new to this programmin thing and I'm currently using
windows vista and it seems whenever I run this file:

line = File.readlines("text.txt")
lines_count = lines.size
text = lines.join
puts "#{line_count} lines"

It will show :

>ruby C:/Users/administrator/analyzer.rb
*** WARNING *** Windows users should check the "Run process in terminal"
check box in the Debugger Preferences
to see STDOUT and STDERR output in real time.

C:/Users/administrator/analyzer.rb:2: undefined local variable or method
`lines' for main:Object (NameError)
>exit

and as you can see, there's an error in the code but I can't seem to
find out what. I have attached the text maybe someone can run it and
tell me what's wrong?

Thanks,

Gen

Attachments:
http://www.ruby-...attachment/324...

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Posted via http://www.ruby-....
3 Answers

Brian Candler

2/3/2009 11:16:00 AM

0

Genocide Law wrote:
> Hi, I'm kinda new to this programmin thing and I'm currently using
> windows vista and it seems whenever I run this file:
>
> line = File.readlines("text.txt")
> lines_count = lines.size
> text = lines.join
> puts "#{line_count} lines"
>
> It will show :
>
>>ruby C:/Users/administrator/analyzer.rb
> *** WARNING *** Windows users should check the "Run process in terminal"
> check box in the Debugger Preferences
> to see STDOUT and STDERR output in real time.
>
> C:/Users/administrator/analyzer.rb:2: undefined local variable or method
> `lines' for main:Object (NameError)
>>exit
>
> and as you can see, there's an error in the code but I can't seem to
> find out what. I have attached the text maybe someone can run it and
> tell me what's wrong?

The error message does tell you exactly the problem: it's on line 2 of
analyzer.rb, and the problem is that you referred to something called
"lines" but no such thing exists. That is, there is no local variable or
method called "lines"

On line 1 you created a local variable called "line", not "lines" :-)

HTH,

Brian.
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Posted via http://www.ruby-....

Genocide Law

2/3/2009 2:47:00 PM

0

Ha ha, okay, I realized now. I copied the codes wrong too. Anyhow, I got
it done awhile ago. Thankx yeah! :-)

P.S. what does HTH means.... -.-

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Posted via http://www.ruby-....

Todd Benson

2/3/2009 3:15:00 PM

0

On Tue, Feb 3, 2009 at 8:46 AM, Genocide Law <jclaw1@gmail.com> wrote:
> Ha ha, okay, I realized now. I copied the codes wrong too. Anyhow, I got
> it done awhile ago. Thankx yeah! :-)
>
> P.S. what does HTH means.... -.-

In this group, it usually means "hope that helps", or "hope that helped".

You can google internet acronyms to see some others in use. There's
also a wiktionary page dedicated to such a thing:

http://en.wiktionary.org/wiki/Appendix:Inte...

Todd