OpenEuphoria

Re: Program overlays

• Posted by George Henry <ghenryca at lycos.com> Jan 26, 2001
• 510 views

Hi,

I know I have a habit (good? bad? indifferent?) or reading my email in
chronological order (received), and replying to a new topic before reading the
comments of those who have preceded me. That noted, ...

When I first encountered 42 flavors of BASIC, this was called "chaining," and
was a very common way of doing relatively large and complex tasks in the very
small amounts of memory (< 64K) that were typically available on microcomputers
at the time (1982ish). It's not a bad idea, although the original motivation -
limited memory - hopefully isn't a problem any more.

George

--

On Fri, 26 Jan 2001 09:30:24
 Sabal Mike wrote:
>I'm at a point right now where a certain feature of Euphoria could be very
>useful if it existed.
>
>Right now, if I want to run a different Euphoria program from within my
>Euphoria program, I need to use system_exec("exw.....  This requires a second
>interpreter to be opened, with a separate shell, separate console, etc.  And if I
>want to pass full control over to the second program, I can't.  I have to add an
>abort(1) statement after this line to release the current program.  This all
>works as far as it goes, but it's not very elegant.
>
>What I would like to see (I think it's been mentioned before) is something like
>the following:
>
>run_euphoria("Myprog2.ex","param1 param2 param3")
>
>The interpreter would, upon processing this line, run the same cleanup routine
>internally that abort() uses, but instead of terminating the interpreter,
>re-initialize it with the new program and command-line options (second parameter
>in the routine call).
>
>I'd love to see a call_euphoria(...) routine where control returns to the
>original calling program upon termination of the called program, but I imagine
>that would be more complex and too hard to maintain.  I'd be happy with just the
>first one.
>
>If Rob has any religious objections to a run_euphoria statement, I suppose I
>could continue to kludge along unelegantly .  I'd also like to get some
>feedback from others whether or not they would find this kind of functionality
>useful.  If it's just me, then forget it....
>
>Michael J. Sabal
>m_sabal at yahoo.com
>


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