Re: eliminate EXTENSIBLE types?

From: [at]} <skulski{>
Date: Mon, 4 Oct 2004 13:00:51 -0400 (EDT)

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>> Fyodor said:
>> There is no practical difference between o.Init and Module.Init( o )
>> because in order to perform the latter call one still has to have an
>> object (o) of the correct type.
>>
>>The only difference is the explicit appearance of Module in the second
>> case, which I maintain only adds to clarity of the code.
>>
> Rene said:
> IF "o" is a POINTER type, to perform the former call you need to have
> created "o"; to perform the latter, you don't. I use de second form when
> Module.Init itself is responsible for performing NEW (o), and associated
> initialization, which may be very handy for the client.

Rene:

  as far as I remember doing NEW inside Init is discouraged by
H.Moessenboeck and other Oberon-2 gurus. They recommend the sequence
NEW(o); Module.Init(o); Furthermore, pointers should be passed by value
rather than by reference. I am not sure if I can write a treatise
of my own why it should be so. I noticed that each time I disobey
those recommendations I seem to run into trouble later on.

Wojtek


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Received on Mon Oct 04 2004 - 19:00:51 UTC

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