On Sat, 2003-01-04 at 04:05, Dan Sugalski wrote:
> At 7:27 PM +0100 1/3/03, Erik Bågfors wrote:
> >On Sat, 2003-01-04 at 00:28, Gopal V wrote:
> >> If memory serves me right, Dan Sugalski wrote:
> >> > language-level "we're object-oriented dammit!" objects, not the
> >> > lower-level stuff we're currently working with) should/will behave.
> >>
> >> yay ! ... finally !
> >
> >The moment we've all been waiting for :)
>
> Sheesh, everyone lay on the guilt, why don't you? :-P
Working on it....
To be honest, I won't have much time from next week so now is probably
the only time I have to do something for a long time. So all I can do
is lay on the guilt :)
> > > > reference-style objects and non-reference values.
> >>
> >> How large can a non-reference value be ? ... (in the .NET opcodes the
> >> 'struct' seems to be unlimited in size ...) But well, I'd settle for
> >> a non-reference of at least large integers (64bit)...
> >>
> >> And how will non-reference values dispatch methods ? ... would they be
> >> "boxed" into a reference for each method call, so that the method call
> >> can modify them ? ...or are all non-reference values immutable ?....
> >>
> >> to put it down clearly ...
> >>
> >> MyValueType a;
> >> a.Modify();
> >>
> >> would a be able to modify itself ? (unfortunately C# allows that)
> >
> >So does ruby. We need that :)
>
> I wasn't aware that ruby had value types--I thought it was all
> reference types. Time to crack open the nutshell book again,
> apparently.
Well, An object can certainly modify itself.
: [bagfors@detrius]$ ; irb
irb(main):001:0> a="test"
"test"
irb(main):002:0> a.sub!('e','s')
"tsst"
irb(main):003:0> p a
"tsst"
nil
But they are still reference types.
irb(main):006:0> a="test"
"test"
irb(main):007:0> b=a
"test"
irb(main):008:0> a.sub!('e','s')
"tsst"
irb(main):009:0> p a
"tsst"
nil
irb(main):010:0> p b
"tsst"
nil
So I guess it just modifies the reference. (oh.. I really need to learn
more about low-level language-stuff...)
/Erik
--
Erik Bågfors | [EMAIL PROTECTED]
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