_read
Public Sub _read ( Stream As Stream )
The
_read method is called by
READ instruction to unserialize an object.
The
READ instruction will first instanciate the object, and then call the
_read method on it.
This will work only if the
_new constructor can be called with no argument.
The method takes the target stream as argument, and must read the stream to initialize the newly created object.
This method returns nothing.
Examples
Dim Item1 As New MyClass
Item1.abc = 123
Item1.def = "456"
Print "In: " & Item1.abc & "-" & Item1.def
Dim f1 As File
f1 = Open "~/item.bin" For Write Create
Write #f1, Item1 As Object 'MyClass
Close f1
Shell "hexdump -C ~/item.bin"
Dim f2 As File
f2 = Open "~/item.bin" For Read
Dim Item2 As MyClass = Read #f2 As MyClass
Close f2
Print "Out: " & Item2.abc & "-" & Item2.def
Class MyClass
Public abc As Integer
Public def As String
Public Sub _read(f As Stream)
abc = Read #f As Integer
def = Read #f As String
End
Public Sub _write(f As Stream)
Write #f, abc As Integer
Write #f, def As String
End
End Class
00000000 6f 07 4d 79 43 6c 61 73 73 7b 00 00 00 03 34 35 |o.MyClass{....45|
00000010 36 |6|
00000011
In: 123-456
Out: 123-456
See also