Concept for T Class

[green_lu]

In Crystal Version 6.0 Edition for C++, there is a sentence about Class Types:
value classes, or types, whose name begins with T. They do not own any external object, either directly (by pointer) or indirectly (by handle).
Pls explain for me for 'own any external object', give me a example is better. Thanks.

[maokkone]

Hi,

Owning an external object means that it is class's responsibility to release the object (memory). So T class types don't have a destructor, because they do not need to free any objects. T types are normally created as automatics like built-in types and the opposite, C types are created to heap by new operator and they must be freed by delete.

Regards,
Marko