PairwiseStreamTransformer<T> class
Emits the n-th and n-1th events as a pair. The first event won't be emitted until the second one arrives.
Example
Rx.range(1, 4)
.pairwise()
.listen(print); // prints [1, 2], [2, 3], [3, 4]
- Inheritance
- Object
- StreamTransformerBase<
T, Iterable< T> > - PairwiseStreamTransformer
Constructors
- PairwiseStreamTransformer()
- Constructs a StreamTransformer which buffers events into pairs as a List.
Properties
-
closeWindowWhen
→ bool Function(List<
T> queue) -
Predicate which determines when the current window should close
final, inherited
- dispatchOnClose → bool
-
Toggle to prevent, or allow the final set of events to be dispatched
when the source Stream closes
final, inherited
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- ignoreEmptyWindows → bool
-
Toggle to prevent, or allow windows that contain
no events to be dispatched
final, inherited
- maxLengthQueue → int
-
Maximum length of the buffer.
Specify this value to avoid running out of memory when adding too many events to the buffer.
If it's
null
, maximum length of the buffer is unlimited.final, inherited -
onWindowEnd
→ Iterable<
T> Function(List<T> queue) -
Handler which fires when the window closes
final, inherited
-
onWindowStart
→ Iterable<
T> Function(T event) -
Handler which fires when the window opens
final, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
- startBufferEvery → int
-
Used to skip an amount of events
final, inherited
- strategy → WindowStrategy
-
Determines how the window is created
final, inherited
- windowStreamFactory → Stream Function(T event)
-
Factory method used to create the Stream which will be buffered
final, inherited
Methods
-
bind(
Stream< T> stream) → Stream<Iterable< T> > -
Transforms the provided
stream
. [...]inherited -
cast<
RS, RT> () → StreamTransformer< RS, RT> -
Provides a
StreamTransformer<RS, RT>
view of this stream transformer. [...]inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
toString(
) → String -
Returns a string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
inherited