[Gambas-user] How to clone an object?
Bruce
adamnt42 at gmail.com
Fri Apr 24 09:47:50 CEST 2020
On 24/4/20 10:49 am, Benoît Minisini wrote:
>
> You have to write the clone method for each class yourself.
Yes!
(slight translation) You have to write the clone function for a class in
that class itself.
That way an object of that class can create an entirely new object that
is a "clone" of that object at that particular point in time. Thus it
can create a photocopy of itself (including it's internals) but also
copies of any contained objects (at that point in time and as long as
their classifiers also have Clone() functions).
Thus you do not need to know what type of classifier represented the
object, just call it's Clone() function which will return an entirely
new object of the same type!
But... never forget, nor assume, that the clone is the same object as
the original. "Daisy the sheep" was an entirely new sheep, not the sheep
it was cloned from.
b
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