amforth-devel

[Amforth-devel] "FORGET" in amForth v3.3

[Ivan R. <iva...@go...>]

Hello, Forthers!

I'm using amForth v3.3 for AT90CAN128.

I’ve a problem to develop a word „forget“. I’ll use only one
dictionary and I need this word to let MCU forget my own words. Can
anyone help me?

Cheers,

Ivan

Re: [Amforth-devel] "FORGET" in amForth v3.3

[Ian J. <ij...@sa...>]

Hello,

Can you use marker?  This worked OK for me.

 From memory - marker creates a word. When that word is executed it  
removes itself and all subsequent words from the dictionary(s).

Simple example:

words
marker qux
words
qux
words

I guess there are some issues but it works OK in 3.4 from my simple  
experiments.

Ian


On 24-Jun-09, at 3:42 AM, Ivan Rudenok wrote:

> Hello, Forthers!
> I'm using amForth v3.3 for AT90CAN128.
> I’ve a problem to develop a word „forget“. I’ll use only  
> onedictionary and I need this word to let MCU forget my own words.  
> Cananyone help me?
> Cheers,
> Ivan

Re: [Amforth-devel] "FORGET" in amForth v3.3

[Matthias T. <mt...@we...>]

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Ivan,

Ivan Rudenok wrote:
> Hello, Forthers!
> 
> I'm using amForth v3.3 for AT90CAN128.
> 
> I’ve a problem to develop a word „forget“. I’ll use only one
> dictionary and I need this word to let MCU forget my own words. Can
> anyone help me?

Generally speaking: forget forget ;=). I wanted to have the
word lists and it is very difficult (at least) to keep track of
the different word lists to implement the forget properly. MARKER
uses a different approach: It takes a snapshot of the whole word list
settings and defines a new word. Whenever this word is called, it
restores the word lists and thus removes itself.

btw: you should definitly switch to release 3.4, it contains a few fixes
wrt marker.

Matthias
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