OpenEuphoria

Re: Need Help Creating include files.

• Posted by Brian Broker <bkb at cnw.com> Feb 25, 2005
• 608 views

Martin Berger wrote:
> 
> Hi all,
> 
> I need to know what I am doing wrong here:
> 
<snip>
> What am I missing?  I'm brand new to programming in Euphoria.  
> I'm using ver 2.4 on a Win XP machine, running in a DOS window.
> 
> I put the file var.e in the euphoria\include directory.  
> I set the environment variable and path according to instructions found on 
> the web site.
> 
> Any help would be appreciated.
> 
> Thanks
> 
> Martin
> 

See section 2.4.2 (Scope) of the reference manual (Language Definition):

When you 'include' a Euphoria file in a main file (see 2.6 Special Top-Level
Statements), only the variables and routines declared using the 'global' 
keyword are accessible or even visible to the main file. The other, non-
global, declarations in the included file are forgotten at the end of the 
included file, and you will get an error message, "not declared", if you try
to use them in the main file. 

So to fix your problem, do this:

-- var.e include file
-- Custom type definitions

global type POSITIVE(atom x)
    return x >= 0
end type

global type NEGATIVE(atom x)
    return x < 0
end type

-- Brian