This mode is selected by the $MODE DELPHI switch. It tries to emulate, as closely as possible, the
behavior of Delphi 4 till Delphi 7. On the command line, this mode is selected by the -Mdelpih
switch.
- You cannot use the address operator to assign procedural variables.
- A forward declaration does not have to be repeated exactly the same by the
implementation of a function/procedure. In particular, you can omit the parameters
when implementing the function or procedure.
- Ansistrings are default, this means that $MODE DELPHI implies an implicit {$H ON}.
- Overloading of functions is not allowed.
- Inline code is allowed: There is no need to enable it with the {$INLINE} directive.
- Nested comments are not allowed.
- The Objpas unit is loaded right after the system unit. One of the consequences of this
is that the type Integer is redefined as Longint.
- Parameters in class methods can have the same names as class properties (although it
is bad programming practice).