This member is added by an implicit conversion from CompareAndSet[A] to
any2stringadd[CompareAndSet[A]] performed by method any2stringadd in scala.Predef.
This member is added by an implicit conversion from CompareAndSet[A] to
StringFormat[CompareAndSet[A]] performed by method StringFormat in scala.Predef.
Conditionally sets signal to given value. Acts similarly as
Signal.compareAndSet