• =?ISO-8859-1?Q?Hans-Eric_Gr=f6nlund?= <hasse42g gmail.com> Aug 30 2007
• Frank Benoit <keinfarbton googlemail.com> Aug 30 2007
• Myron Alexander <someone somewhere.com> Aug 30 2007

=?ISO-8859-1?Q?Hans-Eric_Gr=f6nlund?= <hasse42g gmail.com> writes:

Hello!

How can I check if an object is of a certain class, or implements a certain
interface?

Thanks 

Hans-Eric Grönlund
http://www.hans-eric.com/

Frank Benoit <keinfarbton googlemail.com> writes:

Hans-Eric Grönlund schrieb:
 Hello!
 
 How can I check if an object is of a certain class, or implements a certain
interface?
 
 Thanks 
 
 Hans-Eric Grönlund
 http://www.hans-eric.com/



Object o = ....;

// full qualified class name
o.classinfo.name

// test if castable to class or interface
MyType t = cast(MyType)o;
if( t !is null ){
	// ok, it is castable
}

// short form
if( MyType t = cast(MyType)o ){
	// ok, it is castable
}

Myron Alexander <someone somewhere.com> writes:

Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit

Hans-Eric Grönlund wrote:
 Hello!
 
 How can I check if an object is of a certain class, or implements a certain
interface?
 
 Thanks 
 
 Hans-Eric Grönlund
 http://www.hans-eric.com/


You can use the cast operator to determine if something can be cast to a 
type. See attached example.

Regards,

Myron.