Re: Coming From QBasic
Lynn Kilroy wrote:
>
> Does the Global function thingy have to be included in the main body of the=
>
Not necessarly but it has to be declared before it is called.
> code, even if the function is in an included file? And how about the
> subroutines? How do I call them?
>
> Love & Friendship & Blessed Be!
> Lynn Erika Kilroy
Don Cole
A Bug is an un-documented feature.
A Feature is a documented Bug.
>
>
> >From: "D. Newhall" <guest at RapidEuphoria.com>
> >Reply-To: EUforum at topica.com
> >To: EUforum at topica.com
> >Subject: Re: Coming From QBasic
> >Date: Sat, 14 Jan 2006 14:34:21 -0800
> >
> >
> >posted by: D. Newhall <derek_newhall at yahoo.com>
> >
> >Lynn Kilroy wrote:
> > >
> > > My biggest curiousity is how do I get it to use subs in Included files?=
>
> > > I type the include file line. It accepts that fine. Then I try to get=
>
> > > it to do the screen mode thing, and that it doesn't seem to do so well.=
>
> > > Also, if it's a one-line sub, perhaps I can just plug the line in to my=
>
> > > code without the rest of the sub? One line subs only make sense to me
> > > if they are a sub that's called often and by many different routines,
> > > and I want it to look purdy instead of using the languages default
> > > command synstax. An example from QBasic is my Inkey routine. It's cal=
> l
> > > is purdy simple:
> >(snip)
> >
> >To move stuff between includes you need to declare it as global like so:
> >
> >global integer index
> >
> >global function do_stuff()
> > ...
> >end function
> >
> >it also has to be declared as such before you use it no matter which file=
>
> >it is in.
> >
> >However, there is no call-by-reference in Euphoria so certain things like=
>
> >the inkey example will not work (I think my QB is rusty). Stuff like "Inpu=
> t
> >ans$" would be used in Euphoria as "ans = input()".
> >
> >There's also a QBasic to Euphoria translator in the Archive.
> >=20=20
> ><a
> >href="http://www.rapideuphoria.com/cgi-bin/asearch.exu?dos=on&win=on&lnx=o=">http://www.rapideuphoria.com/cgi-bin/asearch.exu?dos=on&win=on&lnx=o=</a>
> n&gen=on&keywords=qbasic
> >
> >
> > > Speaking of Screen Modes, one of my programs uses a Screen Mode about
> > > which I can find no information in Euphoria Documentation available to
> > > me. I use the QBASIC command
> >(snip)
> >
> >Check the documnetation on graphics ans sound and the graphics.e include=
>
> >file. I think the routines you want are graphics_mode() and/or
> >video_config().
> >
> > > Basically, what I'm looking for is something with the flexibility and
> > > ease of use of QBasic but for more modern programming environments.
> > > Euphoria looks like it might be able to fill the bill, but first, I hav=
> e
> > > to understand the very basic differences between it and QB. I don't
> > > mean the technical stuff like variable groups and nests and stuff {all
> > > that's kind of neat, though, and part of my attraction to the language}=
> ,
> > > but the basic syntax and use of the language, and perhaps help in
> > > handling graphics with the simplicity of QB, but without all the bugger=
> y
> > > errors.
> >
> >Euphoria is certainly a good replacement (I use in place of all the stuff =
> I
> >used QBasic for both professionally and privately). However, certain thing=
> s
> >aren't as easy but in the long run are more powerful and flexible (I
> >think). Also, Euphoria is constantly improved and MUCH faster than QBasic=
>
> >(the Euphoria interpreter beats some compiled QBasic programs).
> >
> >
> > > Another thing ... I have a QB Compiler. From what I saw in the
> > > documentations, there is no Euphoria Compiler. This is something of a
> > > drawback to me. I can purchase a Euphoria binder program, I can even
> > > purchase a Euphoria to C translater. But no Euphoria direct to
> > > Executable Compiler. I imagine this is not a problem with Linux, but
> > > with Windows, it becomes a problem that is really quite large. From
> > > what I can see, there are no free c compilers for Windows. This means
> > > that no matter the cost of the binder and translator, the overall cost
> > > of Euphoria for the programmer is still prohibitively expensive. Sure,=
>
> > > QB is old, and yes, it's very limited. But at least I can distribute m=
> y
> > > QBasic Programs in such a format that people don't have to download a Q=
> B
> > > interpreter to use them, or, worse, purchase a $500.00 program in order=
>
> > > to compile it and use it. Nor do I have to risk the uncredited theft m=
> y
> > > source code {which I make available under GPL, but still, the compiled
> > > version preserves my status as original author on the original code}.
> >
> >There is a free version of the C translator that has a notice saying it's=
>
> >unregistered that you could use. Also, there are free Windows C compilers.=
>
> >Open Watcom (<a
> >href="http://www.openwatcom.org">http://www.openwatcom.org</a>) is one which I
> >highly recommend.
> >
> >
> >The Euphoria Standard Library project :
> > <a href="http://esl.sourceforge.net/">http://esl.sourceforge.net/</a>
> >The Euphoria Standard Library mailing list :
> > <a
> > href="https://lists.sourceforge.net/lists/listinfo/esl-discussion">https://lists.sourceforge.net/lists/listinfo/esl-discussion</a>
> >
> >
<snip>
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