New to ruby: uninitialized constant

ruby-talk
1

I have a program the simulates the knights tour problem. I made 2
classes, 1 called 'Location' which simulates a location on a chess board
and one called 'KnightsTour' which actually performs the knights tour.
Then I have a main.rb file which just creats a knights tour object
(KnightsTour.new) and calls a method on that object. But whenever i try
to run it, I get the following error:

C:\NetBeansWorkspace\KnightsTour\lib\main.rb:3:in `const_missing':
uninitialized constant KnightsTour (NameError)
        from C:\NetBeansWorkspace\KnightsTour\lib\main.rb:8

Any help would be greatly appreciated.

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2

Paul Varoutsos wrote:

I have a program the simulates the knights tour problem. I made 2
classes, 1 called 'Location' which simulates a location on a chess board
and one called 'KnightsTour' which actually performs the knights tour.
Then I have a main.rb file which just creats a knights tour object
(KnightsTour.new) and calls a method on that object. But whenever i try
to run it, I get the following error:

C:\NetBeansWorkspace\KnightsTour\lib\main.rb:3:in `const_missing':
uninitialized constant KnightsTour (NameError)
        from C:\NetBeansWorkspace\KnightsTour\lib\main.rb:8

Any help would be greatly appreciated.
  
Do you "require" the files containing the other two classes? Ruby will not search for them automatically the way, for example, Java does.

-Justin

3

Justin Collins wrote:

Paul Varoutsos wrote:

Any help would be greatly appreciated.
  
Do you "require" the files containing the other two classes? Ruby will
not search for them automatically the way, for example, Java does.

-Justin

Yes I did

···

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4

Paul Varoutsos wrote:

C:\NetBeansWorkspace\KnightsTour\lib\main.rb:3:in `const_missing':
uninitialized constant KnightsTour (NameError)
        from C:\NetBeansWorkspace\KnightsTour\lib\main.rb:8
Justin Collins wrote:
  

Paul Varoutsos wrote:
    

Any help would be greatly appreciated.
  

Do you "require" the files containing the other two classes? Ruby will
not search for them automatically the way, for example, Java does.

-Justin
    
Yes I did
  
Then it is hard to tell what is going on without seeing your code. This error generally means you either have not made the class available or there is a typo somewhere, assuming KnightsTour is a class. Or possibly you are using it before it is defined.

-Justin