On Wednesday, 8 January 2014 at 12:29:48 UTC, Mike Parker wrote:
On 1/8/2014 9:22 PM, evilrat wrote:
Greetings everyone,
i have the code where i have to keep pointers to so
storage(context
dependent stuff), so i tried declare abstract class with ctors
and it
didn't worked.
------- [code]
class MyContext;
abstract class MyObject
{
// yet another bug? all descendants errors no default
ctor...
this() {}
this(MyContext mc)
{
}
MyContext _owner;
}
class MyObjectA : MyObject
{ ... }
//inside MyContext.CreateObj
MyObject CreateMyObj()
{
auto obj = new MyObjectA(this) // two errors produced
... do something with obj before returning it ...
return obj;
}
errors:
-----------
Error: no constructor for MyObjectA
Error: constructor MyObjectA.this () is not callable using
argument
types (MyContext)
--------
am i wrong about abstract classes usage in D or this is a bug?
You're constructing a MyObjectA instance, not a MyObject, so
the compiler is looking for a constructor in MyObjectA that
takes a MyContext param.
class MyObjectA : MyObject {
this(MyContext mc) {
super(mc);
}
}
ok. gotta using mixins :(
