Re: [Amforth-devel] Starting with amforth v4

[pito <pi...@vo...>]

Erich, this is a bad news. It contradicts to what Andy indicated - the
height will use THE NEWEST defined sinus. If the height would have used
the newest defined sinus I would call it a big plus for forth. There
must be I guess a simple mechanism where the newest defined sinus will
change all the references in all the other words which call the sinus.
If I uplaod a new sinus word to my satellite I would be very happy that
all the words will use the new sinus. Pito

----- PŮVODNÍ ZPRÁVA -----
Od: "Erich Waelde" <ew....@na...>
Komu: amf...@li...
Předmět: Re: [Amforth-devel] Starting with amforth v4
Datum: 4.7.2010 - 13:31:23

> Hello,
> 
> On 07/04/2010 12:46 PM, pito wrote:
> > Andy, after I rised the Q I did it directly with
> > my dev system. Frankly
> > > the way how it works is changing my understanding
> > for "interactivity".
> > > Basically you cannot delete wrong words so the space
> > occupied will grow.
> > > Imagine my apollo picosatellite flying in the space
> > and I am tweaking
> > > the sw in its guidance computer. So I have to have
> > at least a chance
> > > activate/deactivate specific words. As I've seen
> > the forth manual the
> > > last definition of a word is valid. So you may have
> > many words with
> > > same name, however the last one will be used (am
> > I right?) for "following"
> > > usage. Imagine wordlist:
> >> words
> > navigate distance position sinus sinus speed height
> > sinus ....
> > >
> > The Q: which sinus word will be used in speed and
> > height calculations?
> > 
> Assuming height calls sinus. When height is compiled,
> it searches
> for sinus in the current wordlist. So it finds
> 
> > navigate distance position sinus sinus speed height
> > sinus ....
> > ------------------------------------------------------^^^^
> this one.
> 
> HOWEVER, sinus is redefined twice. When position is
> compiled,
> it will find
> > navigate distance position sinus sinus speed height
> > sinus ....
> > -----------------------------^^^^^
> this one. Same when you call it interactively in this
> state
> of definitions.
> 
> And redefining sinus will *NOT* change the reference
> to
> the older version of sinus in height.
> 
> 
> I'm sure you have consulted
> http://home.iae.nl/users/mhx/sf.html
> Chapter 9 (under the hood) gives a brief outline, how
> dictionary entries are organized.
> 
> 
> Cheers,
> Erich
> 
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