From: "Steven R." <steverummel@...>
Date: 2007-02-14T08:00:05+09:00
Subject: Re: Newb - uninitialized constant error

coachhilton@gmail.com wrote:
> On Feb 13, 2:41 pm, "Steven R." <steverum...@comcast.net> wrote:
>> I am a Newbie who has written some Ruby code - it actually works when
>> 'all in one file'. To make it more re-usable and practice good coding
>> style, I broke it into 2 - one for classes, one for test code. Call them
>> 'Textractor.rb' and 'main.rb'.
>>
>> I've accepted that it is a simple error, but I can't track it down. I am
>> posting so someone who has not stared at the code as long as I have may
>> see right away what is evading me.
>>
>> I am working out of the 'Pickaxe' book, first edition, as a reference.
>>
>> I tried Google-ing the error message, but no dice.
>>
>> I also tried renaming the classes to include reference to the
>> Textractor.rb. BTW - Textractor.rb is three classes wrapped up in
>> 'module Textractor'.
>>
>> If I omitted any key info. needed to diagnose the problem, it's probably
>> because I didn't recognize it as such, which in turn is probably where I
>> went wrong.
>>
>> Many thanks.
>>
>> I keep getting the following error:
>>
>> main.rb:59: uninitialized constant Main::TextElement (NameError) from
>> main.rb:56
>>
>> Now, TextElement is a properly named class in 'Textractor.rb'.
>>
>> My code is as follows:
>>
>> class Main
>> require 'Textractor.rb'
>>
>> # Testing Logic Follows
>> dateElement =
>> Regexp.new(/(0[1-9]|1[012])[\/.](0[1-9]|[12][0-9]|3[01])[\/.]\d\d/)
>> # Create a new document
>> doc1 = TextDocumentPortrait.new("Document 1")
>>
>> THE LINE 56 BELOW GENERATES THE ERROR...:
>>
>> for count in 0...10
>>
>> # Create a new line, element and add the element to the line
>> newLine = TextLinePortrait.new("Line " + count.to_s)
>>
>> ...IN REFERENCE TO THE FOLLOWING LINE 59:
>>
>> newElement = TextElement.new("Date", dateElement, "R")
>> newLine.addElement(newElement)
>>
>> ...
>>
>> Code continues
> 
> I think we'd need to see all the code to be sure about the problem.
> But since you mention that your code is wrapped in a module, you may
> need to qualify references to its members, as in:
> 
> newElement = Textractor::TextElement.new("Date", dateElement, "R")
>              ^^^^^^^^^^
> Ken
> 

Thanks, Ken - I tried your solution, but I got:

main.rb:55: uninitialized constant Textractor::TextDocumentPortrait 
(NameError)

Here's the listing of main.rb, including your fix:

class Main
require 'Textractor.rb'

# Testing Logic Follows
dateElement = 
Regexp.new(/(0[1-9]|1[012])[\/.](0[1-9]|[12][0-9]|3[01])[\/.]\d\d/)
# Create a new document

LINE 55 FOLLOWS:

doc1 = Textractor::TextDocumentPortrait.new("Document 1")


for count in 0...10
# Create a new line, element and add the element to the line
newLine = Textractor::TextLinePortrait.new("Line " + count.to_s)
newElement = Textractor::TextElement.new("Date", dateElement, "R")
newLine.addElement(newElement)
# Add the line to the DocumentPortrait
doc1.addLine(newLine)
end
doc1.printLines()
# End testing logic
end