Ada Programming/Attributes/'Access
Description
editX'Access is an Ada attribute where X is any object or subprogram.
'Access may be used to return an access value designating the object or subprogram.
Example
edittype
General_Pointeris
access
all
Integer;type
Constant_Pointeris
access
constant
Integer; I1:aliased
constant
Integer := 10; I2:aliased
Integer; P1: General_Pointer := I1'Access; -- illegal P2: Constant_Pointer := I1'Access; -- OK, read only P3: General_Pointer := I2'Access; -- OK, read and write P4: Constant_Pointer := I2'Access; -- OK, read only P5:constant
General_Pointer := I2'Access; -- read and write only to I2
type
Callback_Procedureis
access
procedure
(Id : Integer; Text: String);procedure
Process_Event (Id : Integer; Text: String); My_Callback: Callback_Procedure := Process_Event'Access;