delphi - Appending one element to a dynamic array

Question

This is a very frequent pattern throughout my code:

SetLength(SomeDynamicArray, Length(SomeDynamicArray)+1);
SomeDynamicArray[High(SomeDynamicArray)] := NewElement;

Is there no way to do this in one line?

Edit: This is incredibly inefficient. I know. I use dynamic arrays (in my own code, in my personal projects which only I use) foremost because they are the easiest to use, and I just need to get things done with as little code as possible.

Answer 1

Here's a hack with generics which only works with TArray<T>:

type
  TAppender<T> = class
    class procedure Append(var Arr: TArray<T>; Value: T);
  end;

class procedure TAppender<T>.Append;
begin
  SetLength(Arr, Length(Arr)+1);
  Arr[High(Arr)] := Value;
end;

Usage:

var
  TestArray: TArray<Integer>;

begin
  TAppender<Integer>.Append(TestArray, 5);
end.