week_number 1.1.1

Adds extension method to get the week number from a date

Week Number

This package is forked from https://github.com/KadaDev/week_of_year v2.2.0.

Fast dependency-free extension methods to get week number from a dart DateTime object. Supported systems are:

• ISO 8601
• Western Traditional

Also includes a function to create a DateTime from a year and week number or an ordinal date.

Cited from https://en.wikipedia.org/wiki/Week

System	First day of week	First week of year contains
ISO 8601	Monday	4 January	1st Thursday	4-7 days of year
Western Traditional	Sunday	1 January	1st Saturday	1-7 days of year

ISO 8601

import 'package:week_number/iso.dart';

void main() {
  final date = DateTime.now();
  print(date.weekNumber); // Get the iso week number
  print(date.ordinalDate); // Get the ordinal date
  print(date.isLeapYear); // Is this a leap year?

  final DateTime dateFromWeekNumber = dateTimeFromWeekNumber(2023, 2);
  print(dateFromWeekNumber); // 2023-01-09
  print(dateTimeFromOrdinalDate(2023, 365)); // 2023-12-31
  print(dateTimeFromOrdinalDate(2024, 366)); // 2024-12-31
}

Western Traditional

import 'package:week_number/western_traditional.dart';

void main() {
  final date = DateTime.now();
  print(date.weekNumber); // Get the western traditional week number
  print(date.ordinalDate); // Get the ordinal date
  print(date.isLeapYear); // Is this a leap year?
  print(date.weekdayFromSunday); // sunday = 1, monday = 2, ...

  final DateTime dateFromWeekNumber = dateTimeFromWeekNumber(2023, 2);
  print(dateFromWeekNumber); // 2023-01-08
  print(dateTimeFromOrdinalDate(2023, 365)); // 2023-12-31
  print(dateTimeFromOrdinalDate(2024, 366)); // 2024-12-31
}

Our products using this package

• DidRoku : A Life logging app