There are some differences in the use of set operators in DelphiScript and
Delphi. In DelphiScript the [...] set operator is not supported. You should
use the MkSet function instead. For instance:
DelphiScript
var ppOne, ppTwo;
var z;
...
ppOne : =1;
ppTwo := 2;
z := MkSet(ppOne, ppTwo);
In this example, the MkSet function puts 1 into the second and third bits since the first bit has index 0. So, the value of the z variable is 6 (but not 3).
Instead of the in operator, you should use the InSet function, for example:
DelphiScript
if InSet(ppOne, z) then
Log.Message(...);
See Checking TDBGrid Options From Scripts.
As in Standard Pascal or Object Pascal, sets are implemented as collections of bits. However, because of the implicit type conversions of OLEVariant variables, the resulting sets are treated as integers. Arithmetic operators, +, -, *, <= and >= , cannot be used as set operators. Logical operators must be used in their place. For example:
DelphiScript
z := ppOne + ppTwo;
should be changed to
DelphiScript
z := ppOne or ppTwo;
| Note: | The mentioned functions: MkSet and InSet work not only in DelphiScript but in all supported languages. For more information see Functions Added to All Scripting Languages. |