On 09.02.2014 15:34, Jürgen Hestermann wrote:
With the following declaration and code:
-------------------
var A,B: array of integer;
...
SetLength(A,10);
B := A;
SetLength(B,20);
-------------------
both variables A and B point to the same array with 20 Elements.
Changing A changes B and vice versa.
And again you did not provide a full compilable example. The following code
=== code begin ===
program tdynarrtest;
var
a, b: array of LongInt;
begin
SetLength(a, 10);
b := a;
SetLength(b, 20);
Writeln(Length(a));
Writeln(Length(b));
end.
=== code end ===
results in
=== output begin ===
10
20
=== output end ===
So exactly what I would expect from the COW mechanism.
Regards,
Sven
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