what is the different bettwen typeid and .classinfo?

[Steven Schveighoffer]

On 3/30/20 10:38 AM, lilijreey wrote:
> Hi:
>     I write code like this
> ```D
> class Base
> {
> int base;
> }
> 
> class CC :Base
> {
>   int cc;
> }
> 
> auto cc = new CC;
> 
> //I want check cc object type is CC
> if (typeid(cc) == typeid(CC)) // ok ==
> 
> if (cc.classinfo == AstAssignNode) //error
> 
> if (cc.classinfo == AstAssignNode.classinfo) // ok ==
> ```

They are both the same. Historically they were different (ClassInfo was 
its own type different from TypeInfo_Class). I would recommend typeid 
for future-proof code (it's possible, however unlikely, that .classinfo 
at some point goes away).

-Steve