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From: news@m2xenix.psg.com (Randy Bush)
Newsgroups: comp.lang.modula2
Subject: Re: Nested routines as values?
Message-ID: <1991Jan20.071235.11193@m2xenix.psg.com>
Date: 20 Jan 91 07:12:35 GMT
References: <1991Jan19.151918.2734@waikato.ac.nz>
Organization: Pacific Systems Group, Portland Oregon US
Lines: 18

ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University) writes:

> I heard a rumour from a colleague that the Modula-2 standards people were
> considering allowing routines declared within other routines to be
> passed as values of PROCEDURE types. Can anybody tell me if this is true?

While it was considered, I believe that embellishment was forgone.

> I think it's a good idea, unless it means that PROCEDURE values become
> descriptors, instead of straight addresses. If that's the case, it's
> going to make it very cumbersome to interface to non-Modula-2 code.

And you even know why <grin>.

So, unless you are willing to forgo access to intermediate lexic scopes or have
proc vars be more than addresses ...
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