Rails spinoffs - Feb 2007 - Problem with Dollar F Function

Hi,

I''ve a form field with the id "foo-bar" and I can get the
value from
this field with $F(''foo-bar''), but it is not possible to set
the value
with $F(''foo-bar'') = ''foo bar''. If I use
$(''foo-bar'').value = ''foo
bar'' there is no problem.

Example:
http://test.dirkeinecke.de/prototype/f.html

Any ideas? Is this a bug?

greetings
Dirk Einecke


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Dirk Einecke a écrit :
> Hi,
> 
> I''ve a form field with the id "foo-bar" and I can get
the value from
> this field with $F(''foo-bar''), but it is not possible to
set the value
> with $F(''foo-bar'') = ''foo bar''. If I
use $(''foo-bar'').value = ''foo
> bar'' there is no problem.
> 
> Example:
> http://test.dirkeinecke.de/prototype/f.html
> 
> Any ideas? Is this a bug?
Do you know of any language that lets you do fx(blah) = thing!?

$F returns the value, not a reference to the field''s value structure,
which varies from one field to another.  Use the field''s appropriate
DOM
properties for setting.

-- 
Christophe Porteneuve a.k.a. TDD
"[They] did not know it was impossible, so they did it." --Mark Twain
Email: tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org

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Hi,
> Do you know of any language that lets you do fx(blah) = thing!?
>
> $F returns the value, not a reference to the field''s value
structure,
Okay. I''ll use $(''foo-bar'').value = ''foo
bar'' ...

greetings
Dirk Einecke


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OFF TOPIC warning!

You can actually do fx(blah) = thing in C++ using references. :)

int var = 0;

int& test()
{
  return var;
}

test() = 4;

Sorry, just had to mention that. :)

On 2/11/07, Christophe Porteneuve
<tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org>
wrote:
>
> Do you know of any language that lets you do fx(blah) = thing!?
>
> $F returns the value, not a reference to the field''s value
structure,
> which varies from one field to another.  Use the field''s
appropriate DOM
> properties for setting.
>
> --
> Christophe Porteneuve a.k.a. TDD
> "[They] did not know it was impossible, so they did it." --Mark
Twain
> Email: tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org
>
> >
>
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Hey Andrew (btw, that''s how you markup an OT post, in case you
wondered),

Andrew Kaspick a écrit :
> You can actually do fx(blah) = thing in C++ using references. :)
Totally, but whoever does that without overloading an operator like [] 
to make it less ugly will face my wrath in the next world :-)  However, 
it does come handy.  Consider the STL''s map::operator[] method.  I just
love being able to create a lexicon with stuff like:

   string word;
   map<string, unsigned> lexicon;
   while (cin >> word)
     ++lexicon[word];

But MAN, "obj.method(param) = newValue"?  YEEWWWH!  Just
aesthetically,
you know.  Hey, there''s no accounting for taste.

Actually, I don''t think at all that C++ is the only one letting you do 
that, since all it takes is letting methods return references, and 
having a good/lax enough parser that it will grok such stuff.

-- 
Christophe Porteneuve aka TDD
tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org

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