New instance (uninitialized constant)

ruby-talk
1

I need to indicate where to find the Song class. With a module? I'm
looking for the simplest technique (hint pls):

C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>type Song.rb
class Song
  def initialize(name, artist, duration)
    @name = name
    @artist = artist
    @duration = duration
  end
end
C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>type Sing.rb
aSong = Song.new("Bicylops", "Fleck", 260)
C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>Sing.rb
C:/Documents and Settings/nsaunders/Desktop/Sing.rb:1: uninitialized
constant So
ng (NameError)

C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>

thanks,

Thufir

2

Hint: Insert

    require 'Song'

at the beginning of Sing.rb.

Regards, Morton

···

On Nov 3, 2007, at 12:24 AM, Thufir wrote:

I need to indicate where to find the Song class. With a module? I'm
looking for the simplest technique (hint pls):

C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>type Song.rb
class Song
  def initialize(name, artist, duration)
    @name = name
    @artist = artist
    @duration = duration
  end
end
C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>type Sing.rb
aSong = Song.new("Bicylops", "Fleck", 260)
C:\Documents and Settings\nsaunders\Desktop>
C:\Documents and Settings\nsaunders\Desktop>Sing.rb
C:/Documents and Settings/nsaunders/Desktop/Sing.rb:1: uninitialized
constant So
ng (NameError)

C:\Documents and Settings\nsaunders\Desktop>

3

Thanks, Morton :slight_smile:

4

Or:
  require 'Song.rb'

The point being that you are specifying the name of the _file_ to load
(with or without the .rb extension), not the name of the class. In
your example, they happen to be the same.

Just wanted to be clear about that for your future Ruby programming
endeavors.

···

On Nov 2, 11:47 pm, m_goldb...@ameritech.net wrote:

On Nov 3, 2007, at 12:24 AM, Thufir wrote:

> I need to indicate where to find the Song class. With a module? I'm
> looking for the simplest technique (hint pls):

> C:\Documents and Settings\nsaunders\Desktop>
> C:\Documents and Settings\nsaunders\Desktop>
> C:\Documents and Settings\nsaunders\Desktop>type Song.rb
> class Song
> def initialize(name, artist, duration)
> @name = name
> @artist = artist
> @duration = duration
> end
> end
> C:\Documents and Settings\nsaunders\Desktop>
> C:\Documents and Settings\nsaunders\Desktop>type Sing.rb
> aSong = Song.new("Bicylops", "Fleck", 260)
> C:\Documents and Settings\nsaunders\Desktop>
> C:\Documents and Settings\nsaunders\Desktop>Sing.rb
> C:/Documents and Settings/nsaunders/Desktop/Sing.rb:1: uninitialized
> constant So
> ng (NameError)

> C:\Documents and Settings\nsaunders\Desktop>
> C:\Documents and Settings\nsaunders\Desktop>

Hint: Insert

    require 'Song'

at the beginning of Sing.rb.