type

Marker

@Js @Serializable { simple=true } const class Marker : Obj

Marker is the singleton which indicates a marker tag with no value.

fromStr	Always return `val`

val	Singleton value

fromBool	If true return Marker.val else null
toStr	Return "marker"

static Marker? fromBool(Bool b)

If true return Marker.val else null

static new fromStr(Str s)

Always return val

virtual override Str toStr()

Return "marker"

const static Marker val := ...

Singleton value