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>
> So why is there a movement to ban procedure types at all?
Is there?
I have seen references in the CP documentation to possible 'reduced
support'. Currently procedure types are restricted to global procedures
and cannot apply to built-in procedures. Without any additional
qualification, 'reduced support' might just mean that future
implementations may have to add to these restrictions if dictated by the
environment. I'm confident that if an implementation of Component Pascal
is required to have procedure types to be able to fully exploit the
capabilities of its environment then it will have them.
The fact that they are stated to be 'obsolete' might just mean
'out-dated' or 'unfashionable'. I have yet to hear any official
statement that they are to be 'banned' from Component Pascal.
One indication that computer scientists still believe there is a place
for procedure types is 'Zonnon', the latest language from ETH, the
Pascal / Modula / Oberon stable. This is despite the fact that, at first
glance, Zonnon appears to use more O-O terminology than Oberon.
http://www.bluebottle.ethz.ch/Zonnon/
Incidentally, Zonnon also resurrects enumerated types, read / write etc.
from the pre-Oberon languages.
Chris Burrows
CFB Software
http://www.cfbsoftware.com/gpcp
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Received on Tue Nov 23 2004 - 01:11:25 UTC