From: Osuka Adartse <rocioestradacastaneda@...>
Date: 2004-02-16T10:43:55+09:00
Subject: Re: problem with variables

Dirk Einecke wrote:

> Hi.
> 
> I've a problem with variables.
> I define a global variable outside a method and then I use this variable 
> in a method. And thats my problem. I can print the value of the variable 
> but in the line with the eval() the place holder (#{temp}) is not 
> replaced and the output is empty. But why.
> 
> Can anybody help me?
> 
> <code>
> #!/usr/bin/ruby
> 
> $temp = "Hallo"
> 
> def test()
>   puts $temp                    # -> Hallo ... all is okay
>   test = "#{temp} World"
You're using a global var but here you're asignining a local var that is 
undefined(actually nil) and that's why, change line to:
    test = "#{$temp} World"
>   puts eval( '"' + test + '"' ) # -> ... nothing ... but why?
> end
> 
> print "Content-type: text/html\n\n"
> print test()
just use test()
> </code>
> 
> bye
> Dirk Einecke
> 
After that change you'll get:

Content-type: text/html

Hallo
Hallo World

cheers
Adartse