Label for Operands

[Former Member]

Hi,

Label for Operands

Operands can be elementary or made up of components. Composite operands are:

1.Instances of classes (objects) [ref->comp]

2.Classes [class=>comp ]

3.Interfaces [intf~comp])

Please can anyone explain me in a simple words.

Thanks,

Medha.

[RichHeilman]

All this is saying is that when you are calling a method or referencing an attribute of an instance of a class, you should use -> So say that the class LCL_APP has a instance method called 'TEST_THIS' and an instance attribute called 'THIS_ATTRIBUTE', you can use them like this.

data: o_ref type ref to LCL_APP.

call method o_ref->test_this( ).

* or when referencing the attrbute.

write:/  o_ref->this_attribute.

In the second example, the operand => is used. This is the same as above, but the method or attribute is static and does not have an instance.

The third operance ~ is used to specify the method of the interface which is begin references, works in the same way as above, but when dealing with interfaces.

Regarsd,

Rich Heilman