positive_num

Description:

positive num

The package contains immutable value objects
PositiveInt and PositiveDouble
that encapsulate a positive number (any number greater than 0)
which can be int or double.
The value objects guarantee that their value is always positive
and can't be changed after creation.
They can't be created with 0 or a negative value.
Getting started #
How to start using the package #

dart pub add positive_num

Or specify the package's git url in pubspec.yaml at the dependencies section.
dependencies:
positive_num:
git:
url: https://github.com/maxeema/positive_num.git
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Then import it in your code.
import 'package:positive_num/positive_num.dart';
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Usage #
import 'package:positive_num/positive_num.dart';

void main() {
var someNumber = 1;
//
final (:error, :instance) = PositiveInt.create(someNumber);
if (instance != null) {
final positiveInt = instance;
print('Created a PositiveInt, value: $positiveInt');
} else {
print('Error. $error');
}
}
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Before run #

dart pub get

Run example #

dart run example/positive_num_example.dart

Run tests #

dart test

Copyright #
© Max Shemetov, 2023

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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