[Oberon] Type compatibility rules for Pointers

[Jörg]

You're right
  := operator on ARRAYs was not allowed in Oberon-2 but it is in Oberon-7

Jörg

Am 16.06.20, 09:54 schrieb "Oberon im Auftrag von Tomas Kral" <oberon-bounces at lists.inf.ethz.ch im Auftrag von thomas.kral at email.cz>:

    > Section 5.2 Compatibility of a Base Type and Its Extension, in
    > Hanspeter Mössenböck's book: Object-Oriented Programming in Oberon-2.
    
    Hi Chris, 
    
    Yes thank you for the pointer, been there, done that, have some
    understanding.
    
    Type extension, and procedure variables, are the basis of OOP.
    I learn to use, though often surprised things are possible, unlike in
    Modula-2.
    
    Seeing some ETH Oberon modules, COPY() is quite frequently used,
    where in Oberon-07, just `:=' assignment will do.
    
    -- 
    Tomas Kral <thomas.kral at email.cz>
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