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Thread: ASSIGN error in UDT

  1. #1

    Exclamation ASSIGN error in UDT

    ' Minimal example
    
    type ttest
    
      myvar as Single
      myvar2 as single
      
      function _Create()
      	MsgBox 0, str$(assign(1.5, me.myvar)) ' error
      	'me.myvar2 = assign(2.5, me.myvar) ' error
      End Function
    
    End Type
    
    dim testVar as ttest
    
    unless I'm mistaken this is not reported in the list of known issues, so

    who can confirm this code is correct ?
    ThinBasic 1.11.6.0 ALPHA - Windows 8.1 x64

  2. #2

    Exclamation

    ' Minimal example
    
    type ttest
    
      myvar as Single
      myvar2 as single
      
      function _Create()
      	MsgBox 0, str$(assign2(1.5, me.myvar)) ' error
      	'me.myvar2 = assign2(2.5, me.myvar) ' error
      End Function
    
    End Type
    
    dim testVar as ttest
    
    function Assign2(what as number, byref where as Number) as number 'error
    	where = what
    	Return where
    End Function
    
    My attempt to circumvent my problem is not working either. Can't I pass me.myvar by ref ?
    ThinBasic 1.11.6.0 ALPHA - Windows 8.1 x64

  3. #3
    Super Moderator Petr Schreiber's Avatar
    Join Date
    Aug 2005
    Location
    Brno - Czech Republic
    Posts
    7,128
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    732
    Hi DirectuX,

    the issue is related to ME/UDT variable in general - it has a special handling and multiple cases are "to be implemented".

    In all cases, the memory overlay DIM .. AT is the workaround which can be used:
    type ttest
     
      myvar as Single
      myvar2 as single
       
      function _Create()
        dim help_myvar as single at varptr(me.myvar)
        assign(1.5, help_myvar)
        
        MsgBox 0, me.myvar
      End Function
     
    End Type
     
    dim testVar as ttest
    
    We will have a look how we can make ME to be treated the same way as other variables / UDTs.


    Petr
    Learn 3D graphics with ThinBASIC, learn TBGL!
    Windows 10 64bit - Intel Core i5-3350P @ 3.1GHz - 16 GB RAM - NVIDIA GeForce GTX 1050 Ti 4GB

  4. #4
    Quote Originally Posted by Petr Schreiber View Post

    We will have a look how we can make ME to be treated the same way as other variables / UDTs.


    Petr
    Thanks Petr, thanks Eros.
    ThinBasic 1.11.6.0 ALPHA - Windows 8.1 x64

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