EventBundle

Similar to Signal expressions, but resulting in an event. Accessed events return options depending on whether they fire or not, and the complete result of the expression is an event as well.

Events only propagate a value when they are changing, when the system is at rest, events have no values.

Note: We hide implicit parameters of the API in the documentation. They are used to ensure correct creation, and you normally do not have to worry about them, except if you accidentally call the implicit parameter list, in which cas you may get cryptic errors. This is a scala limitation. We also hide the internal state parameter of passed and returned events.

Enables reading of the current value during admission. Keeps track of written sources internally.

Base implementation for reactives, with Derived for scheduling, together with a ReName and containing a State

Enables the creation of other reactives

As reactives can be created during propagation, any InnerTicket can be converted to a creation ticket.

A reactive value is something that can be reevaluated

User facing low level API to access values in a dynamic context.

Encapsulates an action changing a single source.

InnerTickets are used in Rescala to give capabilities to contexts during propagation. ReevTicket is used during reevaluation, and AdmissionTicket during the initialization.

Common macro accessors for rescala.operator.SignalBundle.Signal and rescala.operator.EventBundle.Event

If no InnerTicket is found, then these implicits will search for a Scheduler, creating the reactives outside of any turn.

Source of (reactive) values. State can only be accessed with a correct InnerTicket.

ReevTicket is given to the Derived reevaluate method and allows to access other reactives. The ticket tracks return values, such as dependencies, the value, and if the value should be propagated. Such usages make it unsuitable as an API for the user, where StaticTicket or DynamicTicket should be used instead.

Propagation engine that defines the basic data-types available to the user and creates turns for propagation handling

User facing low level API to access values in a static context.