function_types 0.0.2

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function_types #

Defines the function types with different arities via typedefs.

Version: 0.0.2

import 'package:function_types/function_types.dart';

void main() {
  Func2<int, int, int> mul = (int a, int b) => a * b;
  print(mul(3, 2));

  add = (int a, int b) => a + b;
  print(add(3, 2));

Func2<int, int, int> add;

0.0.2 #

  • The source code is formatted

0.0.1 #

  • Initial release


import 'package:function_types/function_types.dart';

void main() {
  int add(int a, int b) => a + b;

  var op1 = new Add<int>(add);
  print(op1.add(3, 2));

  var op2 = new Sub<int>((int a, int b) => a - b);
  print(op2.sub(3, 2));

  Func2<int, int, int> mul = (int a, int b) => a * b;
  print(mul(3, 2));

  toString = (Object o) => "String($o)";

Func1<Object, String> toString;

class Add<T> {
  Func2<T, T, T> _add;

  Add(T add(T a, T b)) {
    _add = add;

  Func2<T, T, T> get add => _add;

class Sub<T> {
  final Func2<T, T, T> sub;


Use this package as a library

1. Depend on it

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

  function_types: ^0.0.2

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter pub get

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

3. Import it

Now in your Dart code, you can use:

import 'package:function_types/function_types.dart';
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Learn more about scoring.

We analyzed this package on Mar 24, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.7.1
  • pana: 0.13.6

Health issues and suggestions

Document public APIs. (-1 points)

18 out of 18 API elements have no dartdoc comment.Providing good documentation for libraries, classes, functions, and other API elements improves code readability and helps developers find and use your API.

Maintenance suggestions

Package is getting outdated. (-61.92 points)

The package was last published 84 weeks ago.

Package is pre-v0.1 release. (-10 points)

While nothing is inherently wrong with versions of 0.0.*, it might mean that the author is still experimenting with the general direction of the API.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.60.0 <3.0.0