NewBool creates and returns a concurrent-safe object for bool type, with given initial value `value`.

NewInt creates and returns a concurrent-safe object for int type, with given initial value `value`.

NewInt64 creates and returns a concurrent-safe object for int64 type, with given initial value `value`.

Bool is a struct for concurrent-safe operation for type bool.

Int is a struct for concurrent-safe operation for type int.

Int64 is a struct for concurrent-safe operation for type int64.