lazy 0.1.0

  • Installing
  • Versions
  • 60


Build Status

A library adding lazy evaluation to Dart. This package is based on Günter Zöchbauer's answer on the StackOverflow question How to do lazy evaluation in Dart?.


A simple usage example:

import 'package:lazy/lazy.dart';

class LazyValue {
  Lazy<int> _v = new Lazy<int>(() {
    return 10;

  int get v => _v();

main() {
  final lazy = new LazyValue();
  // Print lazy, then 10
  // Print only 10.

Features and bugs

Please file feature requests and bugs at the issue tracker.



  • Initial version.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  lazy: "^0.1.0"

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter packages get

Alternatively, your editor might support pub get or flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

      import 'package:lazy/lazy.dart';
Version Uploaded Documentation Archive
0.1.0 Mar 31, 2016 Go to the documentation of lazy 0.1.0 Download lazy 0.1.0 archive


We analyzed this package on May 22, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0-dev.54.0
  • pana: 0.11.1


Describes how popular the package is relative to other packages. [more]
63 / 100
Code health derived from static analysis. [more]
93 / 100
Reflects how tidy and up-to-date the package is. [more]
0 / 100
Overall score:
Weighted score of the above. [more]
Learn more about scoring.


Detected platforms: Flutter, web, other

No platform restriction found in primary library package:lazy/lazy.dart.


  • The description is too short.

    Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.

  • Package is pre-v1 release.

    While there is nothing inherently wrong with versions of 0.*.*, it usually means that the author is still experimenting with the general direction API.

  • Fix analysis and formatting issues.

    Analysis or formatting checks reported 1 hint.

    Run dartfmt to format lib/src/lazy_base.dart.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.0.0 <2.0.0
Dev dependencies
test >=0.12.0 <0.13.0