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From: Per Bothner <>
To: Mark Raynsford <>
Subject: Re: Difference in define behaviour between kawa.jar and embedded Scheme example
Date: Thu, 23 Nov 2017 12:51:00 -0000	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 11/23/2017 11:52 AM, Mark Raynsford wrote:
> OK, thanks. This is something I'm going to be looking into at the
> source. As you know, I'm putting together a gratuitously incompatible
> subset of the language, so I have no need for compatibility with
> tradition. I'd rather get hard errors up front. To be honest, I'd
> rather all redefines at the top-level be errors, but I assume this is
> something I'm going to have to implement myself.

Re-definitions are not allowed in files (modules), but they are allowed
in line-by-line mode (a REPL or a file processed with -f).

> I actually ran into this behaviour because I was informally testing my
> subclasses of Scheme/SchemeCompilation and was surprised that I could
> override existing bindings like this (because being able to affect the
> internals of existing definitions wasn't the behaviour I was used to
> from other Schemes).

Surely in most Schemes if f is implemented using gm and g is redefined,
then f will use the new definition (at least in a REPL)?
	--Per Bothner

      reply	other threads:[~2017-11-23 12:51 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-22 22:33 Mark Raynsford
2017-11-23  2:26 ` Per Bothner
2017-11-23 10:52   ` Mark Raynsford
2017-11-23 12:51     ` Per Bothner [this message]

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