[Ironruby-core] undefined Method 'downcase'

Marco Kotrotsos lists at ruby-forum.com
Thu Mar 19 12:40:26 EDT 2009


ugh (slap head)

it was

n = arg.to_s.to_i

so nasty...:)

Marco


Marco Kotrotsos wrote:
> i'm sorry, another one popped up and I hope you can help me with it
> 
> it's with this example
> 
> class Plotlight
>   def fib n
>     if n<2
>       n
>     else
>      res = fib(n-2)+fib(n-1)
>     end
>   end
> end
> 
> 
> when executing, I get Object must be of type String. I suspect this to 
> be because I am feeding it a String argument. When I do this
> 
> class Plotlight
>   def fib arg
>     n = arg.to_i
>     if n<2
>       n
>     else
>      res = fib(n-2)+fib(n-1)
>     end
>   end
> end
> 
> it now says
> 
> +    $exception  {"undefined method `to_i' for 12:ClrString"} 
> System.Exception {System.MissingMethodException}
> 
> 
> so it again must be because it's not an expected Integer...but how do I 
> work around this one? I am trying to understand how this works.
> 
> Thanks
> Marco
> 
> 
> 
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