From: Thufir <hawat.thufir@...>
Date: 2007-11-11T06:00:07+09:00
Subject: Re: undefined local variable or method (filling an array)

On Nov 9, 4:43 pm, 7stud -- <bbxx789_0...@yahoo.com> wrote:
> Thufir wrote:
> > I've been working on this for quite some time and don't understand the
> > error:
>
> > C:/code/monsters.rb:6: undefined local variable or method `monsters'
> > for main:Ob
> > ject (NameError)
>
> my_program.rb:
>
> monsters[0] = 10
>
> --output:--
> undefined local variable or method `monsters' for main:Object
> (NameError)
>
> Normally, variables spring into existence when you assign to them.
> However, the statement above works a little differently.  The characters
> '[]=' are actually the name of a method in the Array class.  That means
> the  the code above is using the variable monsters to call that method.
> However, in order to call a method of the Array class, you need an
> existing array instance.  But, nowhere in the code is an array
> previously assign to the variable monsters.
>
> Try this instead:
>
> my_program.rb:
>
> monsters = []
> monsters[0] = 10
> --
> Posted viahttp://www.ruby-forum.com/.


Gee, it was so weird and frustrating.  Thank you all!



-Thufir