The default implementation of the signal.
A signal that emits events that are mutable values.
A proxy that emits events from the underlying signal and has the same value as the underlying signal.
A signal that is the aggregation of the values of other
type of the aggregate signal
signals for the aggregation
the aggregation operator, must be associative
A signal that never changes its value.
the type of this signal
the constant value of this signal
the resulting constant signal
Creates a mutable signal.
the type of the underlying mutable object
the mutable object