bloc_streambuilder
A stream builder that uses the value of a ValueObservable as initial data. This builder in combination with ValueSubject makes sure that the streambuilder does not need to build twice when the stream already has a value.
Example
ValueObservable<int> stream = ValueSubject(seedValue: 0);
ValueObservableBuilder(
builder: (context, snapshot) { // Only called once and immediately with data if the stream has data
print(
"Build called with data: ${snapshot.data}, connectionState: ${snapshot.connectionState}"
); // First time it prints "Build called with data: 0, connectionState: ConnectionState.active"
return new Text('${snapshot.data}');
},
stream: stream,
)
Libraries
Dart
- dart:ui
- Built-in types and core primitives for a Flutter application. [...]
- dart:async
- Support for asynchronous programming, with classes such as Future and Stream. [...]
- dart:collection
- Classes and utilities that supplement the collection support in dart:core. [...]
- dart:convert
- Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
- dart:core
- Built-in types, collections, and other core functionality for every Dart program. [...]
- dart:developer
- Interact with developer tools such as the debugger and inspector. [...]
- dart:math
- Mathematical constants and functions, plus a random number generator. [...]
- dart:typed_data
- Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]
- dart:io
- File, socket, HTTP, and other I/O support for non-web applications. [...]
- dart:isolate
- Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]