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Simple type class. T classes typically have no explicit constructor and never have a destructor. They can be allocated on the stack or heap.

T classes are generally used to encapsulate integers, booleans and simple other types, or as enumerations:

TDayOfWeek weekday; // An enumeration 
TBool doContinue = ETrue; // A boolean value
TPoint origin; // A point object having TInt X and TInt Y member variables

Notes

• A T classes does not have a destructor as you cannot ensure that it is called in the event of a leave.
• As a result, a T class must not own any object that requires cleanup (such as a heap-based C class object or pointer to memory on the heap, or an R class object). It is acceptable (but rare) for a T class to hold a reference to such an object owned, and cleaned up, elsewhere.
• T class objects like the built-in types, they are returned by value, and may be passed by reference or value.
• Member variables are not automatically zero-initialized like in C classes.
• T classes are typically small in size, thus they're usually created on stack.

See also

• How to create an instance of a T–class into heap with a new operator