Re: VARLEN dds field in RPG-IV

[Hans Boldt <boldt@xxxxxxxxxx>]

rob@xxxxxxxxx wrote:
> Yes, the 2 byte area is implicitly defined.
>
> If I have a variable length field defined to the program, and it's yet to 
> be used, then
> dsply %len(VarLen);  // should display 0
> eval VarLen='Test';
> dsply %len(VarLen);  // should display 4
> /end-free
>                           move  'Hi There'     VarLen
> /free
> dsply VarLen;  // should display 'Hi T'
> /end-free
>                           move  'X'            VarLen
> /free
> dsply VarLen;  // shold display 'Xi T'
>
>
> Hey, if you want MOVE to do all of it's tricks with Move and MoveL and 
> have it truncate, etc; then to allow this then for the compiler writers to 
> do this they have to assume you know what you are doing with the move.

Just to nitpick, those last two DSPLY opcodes would display 'here' 
and 'herX' (respectively). That is, MOVE copies characters right 
adjusted. (Thus nicely illustrating why MOVE is such a poor match 
for string functionality.)

Cheers! Hans