[Lazarus] two questions about generics
Sven Barth
pascaldragon at googlemail.com
Fri Feb 22 12:57:25 CET 2013
On 22.02.2013 10:31, Xiangrong Fang wrote:
> Thanks Sven. In the case I use Default() does it mean it always has
> fixed defaults with specific types, e.g. 0 for integer '' for string. Or
> I can set my own default value?
It is a fixed default value. Simply spoken it's always zero. Even in
cases like the following:
=== example begin ===
type
TTest = record
case Boolean of
True: (a: 5..10);
False: (b: -10..-5);
end;
var
t: TTest;
begin
t := Default(TTest);
Writeln(t.a); // 0
Writeln(t.b); // 0
end.
=== example end ===
Regards,
Sven
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