2010/5/3 spir ☣ <denis.s...@gmail.com>: > Hello, > > A few questions on the topic: > > * Is it possible to define an optional parameter without default value? > > * Is it at all possible for an optional *argument* not to be the last in > actual call? Eg > procedure p(a:Integer=0 ; b:Integer=0) > How can the caller pass b and not a?
No and no. > * The ref states: "For dynamic arrays or other types that can be considered > as equivalent to a pointer, the only possible default value is Nil." > Does this apply to any non-atomic type? Which are the "other types that can > be considered as equivalent to a pointer"? Class, AnsiString. > Tried with a record, but cannot make it be accepted by the compiler. Needed > to change the > parameter to be a pointer to the record instead (so the default can be nil), > but this creates a > trap for the calling code. > Else, is there a common trick or workaround? > What trap? -Flávio _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
