[Gambas-user] Object.SizeOf(array) = 40

[Ru Vuott]

Yes, I know that does not represent the quantity of array contents.

> Why do you care with that?
To better understand via source code how Gambas's done.

For example:

Public Sub Main()

  Dim bb As Byte[] = [11, 22, 33, 44]
  Dim p1, p2 As Pointer
  Dim s As String
  Dim i As Integer
  Dim l As Long
 
' Does it go in CARRAY Structure of gbx_c_array.h ?....
    p1 = Object.Address(bb)
   
' ...in CARRAY->Object->Class->char *name ?
    s = String@(Pointer@(Pointer@(p1) + 24))
    Print s

' ...in CARRAY->int size ?
    i = Int@(p1 + 16)
    Print "\nSize of array type:       "; i; " byte"
   
' ...in CARRAY->int count ?
    i = Int@(p1 + 20)
    Print "Number of array elements: "; i
   
' ...in CARRAY->TYPE type ?
    l = Long@(p1 + 24)
    Print "Type of array values:     "; l
   
' ...in CARRAY->void *data ?
    p2 = Pointer@(p1 + 32)
    Print "\nArray contains these values:"
    For i = 0 To bb.Max
      Print Byte@(p2 + i),
    Next

End


regards
vuott


--------------------------------------------
Dom 20/3/16, Benoît Minisini <gambas at ...1...> ha scritto:

 Oggetto: Re: [Gambas-user] Object.SizeOf(array) = 40
 A: "Ru Vuott" <vuott at ...325...>, "mailing list for gambas users" <gambas-user at lists.sourceforge.net>
 Data: Domenica 20 marzo 2016, 01:45
 
 Le 20/03/2016 01:38, Ru
 Vuott a écrit :
 > Hello......
 >
 >
 *********************************************
 > Public Sub Main()
 >
 >    Dim bb As Byte[] = [1, 2, 3, 4]
 >
 >    Print
 Object.SizeOf(bb)
 >
 >
 End
 >
 *********************************************
 >
 > Object.SizeOf()
 method return 40 byte.
 >
 > Why ?
 >
 > What is the source structure 40 bytes
 long?
 >
 > Maybe
 "GB_ARRAY_BASE" in "gambas.h" ?
 >
 > Regards
 > vuott
 >
 
 It's not the size of the
 array contents, it's the size of the object in 
 memory. Why do you care with that?
 
 -- 
 Benoît
 Minisini