Void

void means that a function returns no value. An omitted return annotation means exactly the same thing.

func Implicit() {}
func Explicit(): void {}

Return types are not inferred from return statements. A void function may fall through or use return;, but it cannot return an expression.

A void call can be an expression statement:

println("Cloth");

It cannot supply an initializer, argument, condition, operator operand, array element, or value return.

void is invalid for fields, parameters, locals, arrays, iteration bindings, and nullable types. Use () for an empty parameter list, not (void).

Constructor bodies follow void return rules, while a constructor call produces the newly constructed class reference or struct value.

A native static func Main() or static func Main(): void produces process status zero. A static func Main(): int32 supplies the status explicitly.