1. Dot .
   • Field Access
   • Static Cast
   • Dynamic Cast
   • Enumeration Access
   • Enumeration Test
2. Null Safe Field Access .?
3. Type Conversion .:
4. Indexed Access []

Dot .

The dot operator has multiple functions.

Field Access

bool a = b.myField;

Static Cast

int a = pi.int;

Dynamic Cast

MyClass a = object.MyClass;

Enumeration Access

fontWeight a = fontWeight.bold;

Enumeration Test

fontWeight a;
bool b = a.bold;

Null Safe Field Access .?

bool a = b.?myField;

Returns the field value if b is not null, and null otherwise (or a zero memory value if the field is not a class). Access is safe for subsequent dot-accesses in the same expression as well, so these two are actually identical:

int x = a.?b.?c.?d.?e;
int y = a.?b.c.d.e;

Type Conversion .:

MyClass a = object.:MyClass;
callback = fn.:function(Control):int

A dynamic cast can always be done with the .: operator. The dot operator overloads to dynamic cast as well unless there are other prioritized overloads (package reference, enum value or enum test, field access).

Indexed Access []

Object z = sequence[3];