declaring variables

BIZ TMS Scripter
1

I needed some time to understand that in scripter there are no typed variables. all seems handled as variants. The declaration section in a procedure header seems to work as a dummy in which you can type wathever you want. eg var MyDouble: TWhatEverYouWant; is acceptet without any error. Is this concept of undeclared variables in scripter a wanted feature or did I configurated smth. wrong? Can this behaviour changed?

I ask because I falled into a trap by working with the format function.

procedure Button1Click(Sender: TObject);
var myDouble: double;
begin
  myDouble := 5;
  ShowMessage( Format('%.3f',[myDouble]) ); // in Scripter it raise an convert error - under Delphi no problems
end;

then I found out that every variable in Scripter seems an variant, then I changed procedure into

procedure Button1Click(Sender: TObject);
var myDouble: double;
begin
  myDouble := VarAsType(5,varDouble);
  ShowMessage( Format('%.3f',[myDouble]) ); // after explicit converted 5 into a double it works
end;

then my consideration was that this handling of untyped vars can let you fall you into a lot more of traps. eg. MyDouble := 'Hello world' in scripter works without problems, but of course as soon you try to MyDouble := MyDouble +1; the next trap. Or asigning a var to another var. you can not go shure that the scripter compiler says anything.
..so this is why I ask where to change this handling. ... Or maybe is there a "scripter internal way" to "really" declare typed variables?

2

That is by design. TMS Scripter is a scripting engine that can be written in Pascal or Basic (working on JS syntax as well). One of its characteristics is that it's dynamically typed, yes. All variables are variants and receive any value. It's been like that since version 1.