Hi all!
I want to extend some operators in Freepascal. I want to achieve something
like this:
if aStr in ['string item 1', 'string item 2', 'string item 3'] then
...
else
...;
Following the examples to overload operators, I wrote:
operator in (a:String; b:array of string):Boolean;
var
c: Integer;
begin
Result:=false;
for c:=0 to High(b) do
if b[c]=a then begin
result:=true;
exit;
end;
end;
But when I try compile this piece of code:
if aStr in ['string item 1', 'string item 2', 'string item 3'] then
...
else
...;
I got:
Error: Ordinal expression expected
Looking to Freepascal documentation, IN operator overloading is possible:
https://www.freepascal.org/docs-html/ref/refse104.html
So if the overloading is possible, Is possible to get this example working?
--
The best regards,
Fabio Luis Girardi
PascalSCADA Project
http://sourceforge.net/projects/pascalscada
http://www.pascalscada.com
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