return

Since everything is an expression, return statements at the end of functions and closures can be omitted.

Angle allows return type polymorphism

The return type of a function is denied by the as keyword:
fib i as int:= if i<2 : 1 else fib(i-1) + fib i-2

Interestingly if the last parameter is untyped, the as keyword also weakly hints at the parameter type.

Different list separators have different bindings: While 1,2,3 binds as one expression, 1;2;3 yields the last element as return value.