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Re: Using the Python Interpreter as a Reference

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Date Tue, 29 Nov 2011 13:57:32 +1100
Subject Re: Using the Python Interpreter as a Reference
From Chris Angelico <rosuav@gmail.com>
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On Tue, Nov 29, 2011 at 1:42 PM, Travis Parks <jehugaleahsa@gmail.com> wrote:
> A good example I have run into is recursion. When a local function
> calls itself, the name of the function may not be part of scope (non-
> local). Languages that support tail-end recursion optimization can't
> optimize. In order to support this, a function in Unit will have
> access to its own name and type. In other words, special scoping rules
> are in place in Unit to allow treating a function as an expression.

I'm inclined toward an alternative: explicit recursion. Either a
different syntax, or a special-case on the use of the function's own
name, but whichever syntax you use, it compiles in a "recurse" opcode.
That way, if name bindings change, it's still going to recurse -
something few languages guarantee, and therefore few languages can
optimize.

ChrisA

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Thread

Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-20 16:46 -0800
  Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-21 13:33 +1100
    Re: Using the Python Interpreter as a Reference Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-21 05:44 +0000
      Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-21 17:48 +1100
      Re: Using the Python Interpreter as a Reference Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2011-11-21 10:03 -0800
      Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-21 16:07 -0800
  Re: Using the Python Interpreter as a Reference Alan Meyer <ameyer2@yahoo.com> - 2011-11-22 13:37 -0500
    Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-25 02:55 -0800
      Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-25 22:10 +1100
  Re: Using the Python Interpreter as a Reference rusi <rustompmody@gmail.com> - 2011-11-25 09:11 -0800
    RE: Using the Python Interpreter as a Reference "Sells, Fred" <fred.sells@adventistcare.org> - 2011-11-25 23:22 -0500
    Re: Using the Python Interpreter as a Reference Matt Joiner <anacrolix@gmail.com> - 2011-11-26 23:19 +1100
  Re: Using the Python Interpreter as a Reference Alec Taylor <alec.taylor6@gmail.com> - 2011-11-27 05:46 +1100
  Re: Using the Python Interpreter as a Reference Rick Johnson <rantingrickjohnson@gmail.com> - 2011-11-26 10:53 -0800
    Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-27 06:34 +1100
      Re: Using the Python Interpreter as a Reference Rick Johnson <rantingrickjohnson@gmail.com> - 2011-11-26 13:15 -0800
    Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-27 14:21 -0800
      Re: Using the Python Interpreter as a Reference Colin Higwell <colinh@somewhere.invalid> - 2011-11-27 23:02 +0000
      Re: Using the Python Interpreter as a Reference Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-27 23:55 +0000
        Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-28 11:26 +1100
        Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-28 10:03 -0800
        Re: Using the Python Interpreter as a Reference Ian Kelly <ian.g.kelly@gmail.com> - 2011-11-28 12:32 -0700
          Re: Using the Python Interpreter as a Reference Neil Cerutti <neilc@norwich.edu> - 2011-11-28 20:20 +0000
            Re: Using the Python Interpreter as a Reference Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-11-29 09:48 +1300
              Re: Using the Python Interpreter as a Reference Neil Cerutti <neilc@norwich.edu> - 2011-11-28 21:11 +0000
          Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-28 13:34 -0800
          Re: Using the Python Interpreter as a Reference Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-28 22:24 +0000
            Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-29 09:48 +1100
            Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-28 18:42 -0800
              Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-29 13:57 +1100
                Re: Using the Python Interpreter as a Reference Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-29 08:12 +0000
                Re: Using the Python Interpreter as a Reference Dave Angel <d@davea.name> - 2011-11-29 03:53 -0500
              Re: Using the Python Interpreter as a Reference Ian Kelly <ian.g.kelly@gmail.com> - 2011-11-28 21:56 -0700
        Re: Using the Python Interpreter as a Reference DevPlayer <devplayer@gmail.com> - 2011-11-28 16:54 -0800
          Re: Using the Python Interpreter as a Reference DevPlayer <devplayer@gmail.com> - 2011-11-28 16:59 -0800
          Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-29 12:49 +1100
            Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-28 19:00 -0800
            Re: Using the Python Interpreter as a Reference Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-29 08:04 +0000
              Re: Using the Python Interpreter as a Reference DevPlayer <devplayer@gmail.com> - 2011-12-01 10:03 -0800
                Re: Using the Python Interpreter as a Reference Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-02 00:43 +0000
                Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-12-02 13:02 +1100
                RE: Using the Python Interpreter as a Reference "Sells, Fred" <fred.sells@adventistcare.org> - 2011-12-02 15:29 -0500
                Re: Using the Python Interpreter as a Reference Devin Jeanpierre <jeanpierreda@gmail.com> - 2011-12-02 15:58 -0500
      Re: Using the Python Interpreter as a Reference Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-11-29 09:40 +1300
        Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-28 13:29 -0800
          Re: Using the Python Interpreter as a Reference Chris Angelico <rosuav@gmail.com> - 2011-11-29 08:57 +1100
          Re: Using the Python Interpreter as a Reference Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-28 22:57 +0000
            Re: Using the Python Interpreter as a Reference Travis Parks <jehugaleahsa@gmail.com> - 2011-11-28 18:57 -0800

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