This article can be obsolete: Actual documentation online
Open array parameters
The concept of open arrays allow arrays of different sizes to be passed to the same procedure or function.
function Sum(Arr: Array of Integer): Integer;
var
i: Integer;
begin
Result := 0;
for i := Low(Arr) to High(Arr) do
Result := Result + Arr[i];
end;
In C++ there is no counterpart to the function "High", which typically is needed to use the open array. Therefore in C++ the value of the upper bound of the open array has to be passed together with a pointer to the first element of the array.
int __fastcall Sum( const int * Arr, int Arr_high )
{
int result;
int i;
result = 0;
for ( i = 0 /* Low( Arr )*/; i <= Arr_high /* High( Arr )*/; i++)
result = result + Arr[i];
return result;
}
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