OpenEuphoria

2. Re: Euphoria 4.0 appears to problematic

• Posted by eumario Dec 12, 2010
• 1310 views

A lot of the default constants that were used in 3.11, have changed in 4.0. An example, being platform() is now deprecated for detecting which platform your on. Instead, use the ifdef ... elsifdef ... elsedef ... end ifdef for platform specific code. The reason for this, is to reduce the overhead code that has to be executed at runtime, as with the previous method of platform(), it was always ran each and every time a function or procedure with platform() in it was called. Where as with the ifdef system, it offsets the work of what platform() did to a single parse time execution, to determine what code to use.

CONSOLE and KEYBOARD I believe are old constants used for DOS programs, which I am not certain on. But we have dropped DOS Support for 4.0, and has been stated on the forum, that there are people looking for coders to renew development for DOS Support.

As for Win32lib. This is a separate project, that is not officially sponsored or supported by the developers of the Core Language. Any issues with Win32lib, need to be brought up with the development team working on it. Which currently, I don't know who is working on it. Sorry.

The documentation does need a lot of fixing up before final release, hopefully we'll be able to get clearer documentation out, so that people will be able to understand what is going on. Any documentation errors, or examples given in the documentation that don't work, please make sure to create a ticket for it. But do not refer to the 3.11 documentation for 4.0, as the 3.11 documentation is way out of date, and many new features, and functions have been added, as well as a major re-organization of the included standard library.

hth,

Mario

4. Re: Euphoria 4.0 appears to problematic

• Posted by jeremy (admin) Dec 12, 2010
• 1343 views

I did not find examples of CONSOLE or KEYBOARD in our documentation. Can you point me to the examples where these two constants exist? I will fix them right away.

namespace io declares a new namespace, it does not use a namespace. You must use include std/io.e for that.

All platform defines are defined in std/os.e. An example of doing what you are doing above is:

include std/os.e 
 
if platform() = LINUX then 
    printf(1, "I'm on Linux!\n") 
else 
    printf(1, "I'm not on Linux!\n") 
end if 

Or, a new 4.0 way (conditional complation) is to use ifdef:

ifdef LINUX then 
    printf(1, "I'm on Linux!\n") 
elsedef 
    printf(1, "I'm not on Linux!\n") 
end ifdef 

I don't think that win32lib has ever been documented in the Euphoria docs. I know that Derek has recently said: "The current Win32lib (0,70,20, "13-Nov-2010"), which is available at Sourceforge, works with Eu 4, both interpreted and translated."

Are there other issues you are having with 4.0? These don't seem to be problems, just some changes. It has been an easier migration for those who have kept up w/4.0 development as it was going on but for those that have not we are creating a What's new in 4.0 document as we speak. It should be available in a few days.

Jeremy

6. Re: Euphoria 4.0 appears to problematic

• Posted by DerekParnell (admin) Dec 12, 2010
• 1323 views

Thank you for trying it out.

Can you please tell us which samples do not work? We need to fix those documentation errors.

There are no examples in the V4 documentation that uses either of these symbols. Are you sure you are looking at version 4 samples and not version 3 samples?

What do you mean? Can you give me some sample code that does this? For example, the code below has this statement and does not give me any errors.

namespace io 
printf(1, "Hello word") 

Maybe you are misunderstanding what that statement means.

The "namespace" statement defines the default namespace for the current file, which can be used by other files that include the file containing the namespace statement.

Let's say I have the following file...

-- xyz.e -- 
namespace kkk 
public constant CONST = 1 

and another file ...

-- myapp.ex -- 
include xyz.e 
? kkk:CONST -- uses the default namespace defined inside xyz.e 

While the platform() function is a built-in one, the LINUX symbol is not. And thus you need to include the file in which LINUX is defined. Your program needs the line ...

include std/os.e 

Are you running DOS applications written for v3? These will not work as the DOS platform is no longer supported.

It would be very helpful of you if you could tell us what exactly is causing issues to appear. We cannot help fix things if we have to guess what your problems are. Can you show us error messages and the source code that goes with these messages?

What can't you find in the V4 documentation?

Also, Win32lib is not part of Euphoria. It is an independent library and has no connection with the development of Euphoria.