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Re: can this be done with generics?

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On Monday, November 25, 2013 11:36:08 AM UTC-5, taq...@gmail.com wrote:
> On Sunday, November 24, 2013 7:55:56 PM UTC-5, Andreas Leitgeb wrote:
> 
> >
> 
> > 
> 
> > Alternatives, that do NOT satisfy me: 
> 
> >   a) use an explicit cast to (Bar) 
> 
> >       ((Bar)(new Bar().foo1().foo42().foo84())).bar();
> 
> >      Would turn into a nightmare, when more of Bar's 
> 
> >      methods got mixed into the chain.
> 
> > 
> 
> ...
> 
> > Thanks in advance!
> 
> A variant of this approach that might be clearer is to have
> 
>     class Foo {
>        ....
>        Bar toBar() {
>            return (Bar) this;  // Throws exception if called inappropriately
>        }
>      }
> 
> Then you can write a long sequence as:
> 

>      new Bar().foo1().foo2().toBar().bar3().bar4().foo5().toBar().bar6()...
> 
> and simply insert a toBar() whenever you want a foo followed by a bar.
> However this would require Foo to know about Bar.  
> 
> 
> 
> This you might be able to get around that with generics...
> 
Or not...    I had thought that since generic resolution occurs at compile time the actual type might be used, but that's not the case.  So the rest of my suggestions doesn't work.  Should have checked <before> writing!

   Tom McGlynn

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can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-25 00:55 +0000
  Re: can this be done with generics? Arne Vajhøj <arne@vajhoej.dk> - 2013-11-24 21:11 -0500
    Re: can this be done with generics? Saxo <jeti789@web.de> - 2013-11-25 01:43 -0800
      Re: can this be done with generics? Saxo <jeti789@web.de> - 2013-11-25 01:47 -0800
      Re: can this be done with generics? Arne Vajhøj <arne@vajhoej.dk> - 2013-11-26 21:32 -0500
    Re: can this be done with generics? Silvio <silvio@internet.com> - 2013-11-25 11:30 +0100
      Re: can this be done with generics? Saxo <jeti789@web.de> - 2013-11-25 02:36 -0800
      Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-25 10:45 +0000
      Re: can this be done with generics? Arne Vajhøj <arne@vajhoej.dk> - 2013-11-26 21:35 -0500
        Re: can this be done with generics? Silvio <silvio@internet.com> - 2013-11-27 10:48 +0100
        Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-27 10:18 +0000
  Re: can this be done with generics? Patrick Roemer <sangamon@netcologne.de> - 2013-11-25 12:59 +0100
    Re: can this be done with generics? Robert Klemme <shortcutter@googlemail.com> - 2013-11-25 22:31 +0100
      Re: can this be done with generics? Patrick Roemer <sangamon@netcologne.de> - 2013-11-26 12:03 +0100
      Re: can this be done with generics? v_borchert@despammed.com (Volker Borchert) - 2013-11-26 21:32 +0000
        Re: can this be done with generics? Robert Klemme <shortcutter@googlemail.com> - 2013-11-26 23:30 +0100
      Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-27 18:53 +0000
        Re: can this be done with generics? Sebastian <news@seyweiler.dyndns.org> - 2013-11-28 22:28 +0100
          Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-30 14:21 +0000
  Re: can this be done with generics? Mike Amling <mamling@chaff.us> - 2013-11-25 09:02 -0600
    Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-26 01:04 +0000
      Re: can this be done with generics? Robert Klemme <shortcutter@googlemail.com> - 2013-11-26 08:16 +0100
        Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-26 20:42 +0000
    Re: can this be done with generics? Arne Vajhøj <arne@vajhoej.dk> - 2013-11-26 21:38 -0500
      Re: can this be done with generics? Mike Amling <mamling@chaff.us> - 2013-11-27 11:05 -0600
  Re: can this be done with generics? taqmcg@gmail.com - 2013-11-25 08:36 -0800
    Re: can this be done with generics? taqmcg@gmail.com - 2013-11-25 09:04 -0800
      Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-26 00:50 +0000
        Re: can this be done with generics? Arivald <NOSPAMarivald@interia.pl> - 2013-11-26 07:10 +0100
          Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-11-27 18:58 +0000
  Re: can this be done with generics? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-12-07 09:04 -0800
    Re: can this be done with generics? Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-12-07 19:20 +0000
      Re: can this be done with generics? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-12-10 11:14 -0800

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