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program tgeneric_stringparam;
{$mode objfpc}
type
TStringHelper = type helper for string
procedure Helping;
end;
generic TGen<T> = class
function Foo: T;
procedure bar(param: T);
end;
TDataItem = class
Name, Address: String;
end;
TMyData = specialize TGen<TDataItem>;
TMyString = specialize TGen<string>;
procedure TStringHelper.Helping;
begin
end;
function TGen.Foo: T;
begin
end;
procedure TGen.bar(param: T);
begin
end;
var
MyData: TMyData;
MyString: TMyString;
begin
MyData.Foo.{completion:Name,Address,!Helping} ;
MyString.Foo.{completion:Helping,!Name,!Address} ;
d1{guesstype:TDataItem} := MyData.Foo;
s1{guesstype:string} := MyString.Foo;
MyData.bar(x);
MyString.bar(y);
end.
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