«

Hello,

Probably I am not seeing it now, but is it possible for constructor(int) to
call constructor() ?

class A
{
private:
int x, y;
public:
A();
A(int);
};

A::A()
{
x = y = 0;
}

A::A(int x)
{
// call A::A() ?
// in Java, it is: this()
}

Or I have to write a small function like:
A::ctor()
{
// do common stuff here
}
A::A()
{
ctor();
}
A::A(int x)
{
ctor();
// more stuff here
}


--
Elias

lallous wrote:
> Hello,
>
> Probably I am not seeing it now, but is it possible for
> constructor(int) to call constructor() ?
[SNIP]

No. It is being discussed as a possible future feature (delegating
constructor???) but right now all you can do is to make a 3rd (named)
function and call that one from both constructors. This - of course - lacks
the capability of sharing initializer lists.

--
Attila aka WW

"lallous" <> wrote...
> Probably I am not seeing it now, but is it possible for constructor(int)
to
> call constructor() ?

No. Constructors don't have names, they cannot be called.

> [...]
>
> Or I have to write a small function like:
> A::ctor()

Yes.

V

lallous wrote:

> Hello,
>
> Probably I am not seeing it now, but is it possible for
> constructor(int) to call constructor() ?

No.

> Or I have to write a small function like:

Either that, or use default values for the parameters of your A(int)
constructor.

On Fri, 23 Jan 2004 16:41:57 +0200, Attila Feher wrote:

> lallous wrote:
>> Hello,
>>
>> Probably I am not seeing it now, but is it possible for
>> constructor(int) to call constructor() ?
> [SNIP]
>
> No. It is being discussed as a possible future feature (delegating
> constructor???) but right now all you can do is to make a 3rd (named)
> function and call that one from both constructors. This - of course - lacks
> the capability of sharing initializer lists.

Well another thing that sometimes works is creating a baseclass that has
the common code in its constructor.

HTH,
M4

On Fri, 23 Jan 2004 16:32:55 +0200 in comp.lang.c++, "lallous"
<> was alleged to have written:
>is it possible for constructor(int) to call constructor() ?

This issue is covered in Marshall Cline's C++ FAQ. See the topic
"[10.3] Can one constructor of a class call another constructor of the
same class to initialize the this object?" It is always good to check
the FAQ before posting. You can get the FAQ at:
http://www.parashift.com/c++-faq-lite/