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Re: Message-not-understood and stack effects

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Andrew Haley wrote:
> Because it ges against the very idea of a proxy.  A proxy is a class
> that can stand in for another class: to an outsider it has the same
> properties as the class it's proxying for.  A collection does not have
> this property.  A vector is not a proxy for a scalar.

Yes, normally you should use an iterator (map, foreach) in a collection 
to do things like that.  This takes a quotation as argument, and the 
quotation sends messages to the elements.

BTW: The implementation of generic proxies (which proxy every other 
object, and only define the protocol how to do so) is greatly helped by 
having a signature for each method available to the system (we *can* do 
that in Forth, it would mean that the stack effect for a method is not 
just a comment, but information that is stored with the selector).  If 
the proxy talks to a remote object, you also need serialization for 
whatever data you send to that object, and to do that, some sort of type 
information is needed (e.g. addr len would be preferrable to addr u, 
because with that information, the proxy can know that it has to send 
len bytes starting at addr to the destination).

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/

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Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-17 13:16 +0000
  Re: Message-not-understood and stack effects "A. K." <akk@nospam.org> - 2012-04-17 18:20 +0200
    Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-17 16:37 +0000
      Re: Message-not-understood and stack effects vandys@vsta.org - 2012-04-17 17:43 +0000
      Re: Message-not-understood and stack effects Alex McDonald <blog@rivadpm.com> - 2012-04-17 10:40 -0700
  Re: Message-not-understood and stack effects Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-04-17 12:41 -0500
    Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-18 09:48 +0000
      Re: Message-not-understood and stack effects Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-04-18 05:59 -0500
        Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-04-18 08:52 -0700
        Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-19 11:47 +0000
          Re: Message-not-understood and stack effects Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-04-19 07:50 -0500
            Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-04-19 07:14 -0700
              Re: Message-not-understood and stack effects Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-04-19 09:31 -0500
            Re: Message-not-understood and stack effects Bernd Paysan <bernd.paysan@gmx.de> - 2012-04-19 19:31 +0200
            Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-20 10:17 +0000
              Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-04-20 07:52 -0700
                Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-20 15:26 +0000
                Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-04-24 06:09 -0700
                Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-24 16:52 +0000
                Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-04-28 18:38 -0700
                Re: Message-not-understood and stack effects "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-04-29 00:19 -0400
                Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-04-29 11:16 -0700
                Re: Message-not-understood and stack effects "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-04-29 21:55 -0400
                Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-05-01 14:44 -0700
                Re: Message-not-understood and stack effects "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-05-02 05:35 -0400
                Re: Message-not-understood and stack effects Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-02 06:29 -0500
                Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-02 12:23 +0000
                Re: Message-not-understood and stack effects Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-02 08:43 -0500
                Re: Message-not-understood and stack effects Doug Hoffman <glidedog@gmail.com> - 2012-05-02 11:06 -0400
                Re: Message-not-understood and stack effects Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-03 18:41 +0200
                Re: Message-not-understood and stack effects Doug Hoffman <glidedog@gmail.com> - 2012-05-03 13:07 -0400
                Re: Message-not-understood and stack effects Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-04 02:46 +0200
                Re: Message-not-understood and stack effects Doug Hoffman <glidedog@gmail.com> - 2012-05-03 22:09 -0400
                Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-03 09:14 +0000
                Re: Message-not-understood and stack effects Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-03 04:33 -0500
                Re: Message-not-understood and stack effects Mark Wills <markrobertwills@yahoo.co.uk> - 2012-05-02 12:58 -0700
                Re: Message-not-understood and stack effects vandys@vsta.org - 2012-05-02 20:43 +0000
                Re: Message-not-understood and stack effects Mark Wills <markrobertwills@yahoo.co.uk> - 2012-05-02 13:48 -0700
                Re: Message-not-understood and stack effects John Passaniti <john.passaniti@gmail.com> - 2012-05-03 10:42 -0700
                TypoForth (was: Message-not-understood and stack effects) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-30 13:47 +0000
                Re: TypoForth (was: Message-not-understood and stack effects) BruceMcF <agila61@netscape.net> - 2012-04-30 08:38 -0700
                Re: TypoForth (was: Message-not-understood and stack effects) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-30 16:23 +0000
                Re: TypoForth (was: Message-not-understood and stack effects) BruceMcF <agila61@netscape.net> - 2012-04-30 09:41 -0700
                Re: TypoForth (was: Message-not-understood and stack effects) John Passaniti <john.passaniti@gmail.com> - 2012-05-01 14:53 -0700
  Re: Message-not-understood and stack effects anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-04-21 12:34 +0000

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