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.
Type parameters
- T
-
Value type of the event occurrences.
Attributes
Members list
Grouped members
accessor
Add an observer.
Add an observer.
Attributes
- Returns
-
the resulting rescala.structure.Observe can be used to remove the observer.
Makes the enclosing reactive expression depend on the current value of the reactive.
Makes the enclosing reactive expression depend on the current value of the reactive.
Attributes
- See also
-
apply
- Inherited from:
- MacroAccess
Event operators
Filters the event, only propagating the value when the filter is true.
Filters the event, only propagating the value when the filter is true.
Attributes
Collects the results from a partial function
Collects the results from a partial function
Attributes
Propagates the event only when the other event exception
does not fire.
Propagates the event only when the other event exception
does not fire.
Attributes
Filters the event, only propagating the value when the filter is true.
Filters the event, only propagating the value when the filter is true.
Attributes
Flattens the inner value.
Flattens the inner value.
Attributes
Transform the event.
Transform the event.
Attributes
Like map, but allows to ignore the parameter if its type is Unit. Useful for snapshotting some signals when an event triggers
Like map, but allows to ignore the parameter if its type is Unit. Useful for snapshotting some signals when an event triggers
Attributes
Events disjunction. Propagates the values if any of the events fires. Only propagates the left event if both fire.
Events disjunction. Propagates the values if any of the events fires. Only propagates the left event if both fire.
Attributes
Event to Signal conversions
Counts the occurrences of the event. The argument of the event is discarded. Always starts from 0 when the count is created (no matter how often the event has activated in the past).
Counts the occurrences of the event. The argument of the event is discarded. Always starts from 0 when the count is created (no matter how often the event has activated in the past).
Attributes
returns a signal holding the latest value of the event.
returns a signal holding the latest value of the event.
Value parameters
- init
-
initial value of the returned signal
Attributes
returns a signal holding the latest value of the event.
returns a signal holding the latest value of the event.
Attributes
Holds the latest value of an event as an Option, None before the first event occured
Holds the latest value of an event as an Option, None before the first event occured
Attributes
Applies a function on the current value of the signal every time the event occurs, starting with the init value before the first event occurrence
Applies a function on the current value of the signal every time the event occurs, starting with the init value before the first event occurrence
Attributes
Returns a signal which holds the last n events in a list. At the beginning the list increases in size up to when n values are available
Returns a signal which holds the last n events in a list. At the beginning the list increases in size up to when n values are available
Attributes
collects events resulting in a variable holding a list of all values.
collects events resulting in a variable holding a list of all values.
Attributes
internal
conversion
Folds events with a given operation to create a Signal.
Folds events with a given operation to create a Signal.
Attributes
Type members
Types
Value members
Concrete methods
Uses a partial function onFailure
to recover an error carried by the event into a value when returning Some(value), or filters the error when returning None
Uses a partial function onFailure
to recover an error carried by the event into a value when returning Some(value), or filters the error when returning None
Attributes
Inherited methods
Attributes
- Inherited from:
- FoldBundle
Attributes
- Inherited from:
- Disconnectable