1. sub tasks
Does EU have any way to launch another program, pass it a value(or 2), wait
for it to finish and receive any return value(or 2)?
I have been using this (subtask) in Theos for common things like an
Inventory or customer lookup. These would be used by may programs but only
one copy of the look-up program need be written. For example the inventory
search subtask is used by about 35 programs. If I find a bug in it I only
have to change it one place. If I included it in an EU program as a
function, I would then have to compile(to C) all programs which use it. Not
as convinent as a subtask..... does this make sense? How would you approach
this in EU?
...george
2. Re: sub tasks
On Wednesday 15 August 2001 12:13, George Walters wrote:
>
> Does EU have any way to launch another program, pass it a value(or 2), wait
> for it to finish and receive any return value(or 2)?
>
> I have been using this (subtask) in Theos for common things like an
> Inventory or customer lookup. These would be used by may programs but only
> one copy of the look-up program need be written. For example the inventory
> search subtask is used by about 35 programs. If I find a bug in it I only
> have to change it one place. If I included it in an EU program as a
> function, I would then have to compile(to C) all programs which use it. Not
> as convinent as a subtask..... does this make sense? How would you approach
> this in EU?
Why would you have to compile it to C?
Any program which "includes" your routine can call it.
Regards,
Irv
3. Re: sub tasks
George:
I would use system() or system_exec() (whichever 1 returns error codes)
& pass my input as either stdin or as cmd-line parameters. The
returned values would be either via:
1. error codes,
2. stdout, or
3. thru a temp file interface.
I think I saw something in the archive that allows a EU prog. to use
COM or DDE. That could be another option for passing data back &
forth.
Regards
Brian Keene
--- George Walters <gwalters at sc.rr.com> wrote:
>
> Does EU have any way to launch another program, pass it a value(or
> 2), wait
> for it to finish and receive any return value(or 2)?
>
> I have been using this (subtask) in Theos for common things like an
> Inventory or customer lookup. These would be used by may programs but
> only
> one copy of the look-up program need be written. For example the
> inventory
> search subtask is used by about 35 programs. If I find a bug in it I
> only
> have to change it one place. If I included it in an EU program as a
> function, I would then have to compile(to C) all programs which use
> it. Not
> as convinent as a subtask..... does this make sense? How would you
> approach
> this in EU?
>
> ...george
>
>
>
>
>
4. Re: sub tasks
Irv, I would at some point like to run all the probrams in a c-compiled
state and not always run them in interpretive mode.
...george
----- Original Message -----
From: "Irv Mullins" <irvm at ellijay.com>
To: "EUforum" <EUforum at topica.com>
Subject: Re: sub tasks
>
> On Wednesday 15 August 2001 12:13, George Walters wrote:
> >
> > Does EU have any way to launch another program, pass it a value(or 2),
wait
> > for it to finish and receive any return value(or 2)?
> >
> > I have been using this (subtask) in Theos for common things like an
> > Inventory or customer lookup. These would be used by may programs but
only
> > one copy of the look-up program need be written. For example the
inventory
> > search subtask is used by about 35 programs. If I find a bug in it I
only
> > have to change it one place. If I included it in an EU program as a
> > function, I would then have to compile(to C) all programs which use it.
Not
> > as convinent as a subtask..... does this make sense? How would you
approach
> > this in EU?
>
> Why would you have to compile it to C?
> Any program which "includes" your routine can call it.
>
> Regards,
> Irv
>
>
>
>
>
5. Re: sub tasks
On Wednesday 15 August 2001 13:49, George Walters wrote:
>
> Irv, I would at some point like to run all the probrams in a c-compiled
> state and not always run them in interpretive mode.
Then what you wanted to know was "Can I compile my task into a .dll
and call it from Euphoria?" - to which the answer is "yes".
Compile the speed critical tasks, and call them from interpreded Eu,
or compile everything if you want.
Regards,
Irv
