Christos Chryssochoidis wrote: > Hi, > > I tried to write some function that returned a dynamic array, and > realized that this isn't allowed. Why? After all one can specify an > array of variable length as type for variables... Furthermore - if I'm > not mistaken - a dynamic array is implemented internally as a pointer, > and so there wouldn't be any runtime overhead for returning a dynamic > array from a function. >
It *is* allowed. The only trick is that you have to declare a type for your dynamic array, i.e. you have to write something like type TDynInts = array of Integer; function MakeArray: TDynInts; instead of function MakeArray: array of Integer; This quick example compiles fine in objfpc mode: type TDynInts = array of Integer; function MakeArray: TDynInts; begin SetLength(Result, 2); Result[0] := 0; Result[1] := 1; end; var A: TDynInts; begin A := MakeArray; Writeln(A[0], ' ', A[1]); end. Michalis _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
