Why would referencing instance members fail?
ref=: 4 : 'x,''_'',(":>y),''_'''
at=: 2 : '(m ref n)~'
o=. conew 'test'
('a' ref o)
a_11_
('a' ref o)=: 12
('v' ref o)=: 3 : 'a + y'
('v' ref o)~ 23
35
('w' ref o)=: 3 : 'a=: a + y'
('w' ref o)~ 100
112
('a' ref o)~
112
'w' at o 2000
2112
'a' at o
2112
'codestroy' at o ''
1
'a' at o
|locale error: at
| (m ref n)~
--- Pascal Jasmin <[EMAIL PROTECTED]> wrote:
> That is very nice solution, and if I had remembered the evoke adverb, I might
> have settled for
> it. Raul's solution actually generates a verb, and not the string
> representation of the member.
> That is preferable because all callees will know how to execute a verb, and
> won't detroy the
> reference by evoking it.
>
> The other problem is that this technique forces you to write all your class
> verbs to take the
> instance variable as a parameter (x), (so that they are f. proof) because
> evoking the string
> loses the entire context for the function that you normally have if you
> called v2__o. The verb
> v2_3_ will always execute correctly, but if the verb references instance
> variables, then as a
> string, 'v2_3_'~ will fail.
>
>
> ----- Original Message ----
> From: Oleg Kobchenko <[EMAIL PROTECTED]>
> To: Programming forum <[email protected]>
> Sent: Monday, October 30, 2006 8:00:32 PM
> Subject: RE: [Jprogramming] passing object functions to other objects
>
> Actually if it's just a name generator (like Raul's refname),
> it can be a dyad, not necessarily a conjunction.
>
> ref=: 4 : 'x,''_'',(":>y),''_'''
>
> 100 ('v1' ref 'abc')~ ('n1' ref 'abc')~
> 223
>
> Verb allows additional operations
>
> ((;:'n2 n3 n4') ref&.> <'abc')=: i.3
> ((;:'n2 n3 n4') "[EMAIL PROTECTED]&> <'abc')
> 0 1 2
>
>
> Conjunction is necessary, when a value is deferenced.
>
> at=: 2 : '(m,''_'',(":>n),''_'')~'
>
> 'n1' at 'abc'
> 123
> 100 'v1' at 'abc' 'n1' at 'abc'
> 223
>
> This will not allow assignment, but it conceils
> the redirection.
>
>
> --- Oleg Kobchenko <[EMAIL PROTECTED]> wrote:
>
> > It depends on what class the value of name is:
> > verbs cannot return verbs. So conjunction is used:
> >
> > of=: 2 : 'm,''_'',(":>n),''_'''
> >
> > n1_abc_=: 123
> > v1_abc_=: +
> >
> > 'n1' of 'abc'
> > n1_abc_
> > ('n1' of 'abc')~
> > 123
> >
> > 'v1' of 'abc'
> > v1_abc_
> > ('v1' of 'abc')~
> > +
> > 100 ('v1' of 'abc')~ ('n1' of 'abc')~
> > 223
> >
> > o=. conew 'ptest'
> > ('n2' of o)
> > n2_1_
> >
> > ('n2' of o)=: 456
> > ('v2' of o)=: -
> >
> > ('n2' of o)~ ('v2' of o)~ 400
> > 56
> >
> > ('codestroy' of o)~''
> > 1
> > n2_1_
> > |locale error
> > | n2_1_
> >
> >
> > --- "Miller, Raul D" <[EMAIL PROTECTED]> wrote:
> >
> > > Oleg Kobchenko wrote:
> > > >What are we trying to achieve here?
> > > Given a name and a locale, a mechanism to create a reference
> > > to the named member of that locale which remains valid in an
> > > arbitrary locale.
> > > --
> > > Raul
> >
> >
> >
> >
> > ____________________________________________________________________________________
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> >
>
>
>
>
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>
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