BufferStreamTransformer<T> class

Creates an Observable where each item is a List containing the items from the source sequence, batched by the sampler.

Example with onCount

Observable.range(1, 4)
  .buffer(onCount(2))
  .listen(print); // prints [1, 2], [3, 4]

Example with onFuture

new Observable.periodic(const Duration(milliseconds: 100), (int i) => i)
  .buffer(onFuture(() => new Future.delayed(const Duration(milliseconds: 220))))
  .listen(print); // prints [0, 1] [2, 3] [4, 5] ...

Example with onTest

new Observable.periodic(const Duration(milliseconds: 100), (int i) => i)
  .buffer(onTest((i) => i % 2 == 0))
  .listen(print); // prints [0], [1, 2] [3, 4] [5, 6] ...

Example with onTime

new Observable.periodic(const Duration(milliseconds: 100), (int i) => i)
  .buffer(onTime(const Duration(milliseconds: 220)))
  .listen(print); // prints [0, 1] [2, 3] [4, 5] ...

Example with onStream

new Observable.periodic(const Duration(milliseconds: 100), (int i) => i)
  .buffer(onStream(new Stream.periodic(const Duration(milliseconds: 220), (int i) => i)))
  .listen(print); // prints [0, 1] [2, 3] [4, 5] ...

You can create your own sampler by extending StreamView should the above samplers be insufficient for your use case.

Inheritance

Constructors

BufferStreamTransformer(SamplerBuilder<T, List<T>> sampler, { bool exhaustBufferOnDone: true })

Properties

exhaustBufferOnDone bool
final
sampler SamplerBuilder<T, List<T>>
final
hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

bind(Stream<T> stream) Stream<List<T>>
Transforms the provided stream. [...]
override
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 ==(dynamic other) bool
The equality operator. [...]
inherited

Static Methods

assertSampler<T>(SamplerBuilder<T, List<T>> scheduler) → void