groovy.lang.MissingPropertyException

[Frank Lampert]

Hi,

I have a problem calculating the fibonacci numbers in an iterative way by defining the following method in a fibonacci.groovy file:

 
def fib(n){
   if(n == 0) return 0
   if(n == 1) return 1
   else {
    def prev_1 = 1
    def prev_2 = 1
    def new_element = 0
    for (i in 2..n){
     new_element = prev_1 + prev2
     prev_1 = prev_2
     prev_2 = new_element
    }
   } 

return new_element
     
  }

   

I am using the Java scripting api to invoke that groovy method and every time I do so I get the error:

org.codehaus.groovy.runtime.InvokerInvocationException: groovy.lang.MissingPropertyException: No such property: prev2 for class: Script1


I mean, something is wrong with the variable pref_2, but I cannot figure out what it is?

Does anybody know how to handle this?

Thanks for answers in advance!

[Gregg Bolinger]

Please see your private messages for an important administrative matter.

[Frank Lampert]

ok, I got it....variables were defined within the else brackets that caused the trouble.

[Gregg Bolinger]

Frank Lampert wrote:ok, I got it....variables were defined within the else brackets that caused the trouble.

Frank, thanks for sharing your solution. You'd be surprised how many people don't and it is very helpful when you do. Also, thanks for fixing your name. I much prefer calling you Frank than jkljkljlkjkljlk. ;)