flutter_commons_lang 1.0.5

commons_lang for flutter, utils for op DateTime, String, List, num

flutter_commons_lang

commons_lang for flutter, provide DateUtils, StringUtils and so on...

Usage

NumberUtils

provider add/subtract/multiple/divide to safe calculate with scale,keep param's runtimeType or custom to returnType.

NumberUtils.getScale(1.12346);
NumberUtils.setScale(1.1246, scale: 2, roundingMode: ROUND_UP);

int a = NumberUtils.add(1, 2);
double b = NumberUtils.add(1, 2, returnType: double);

NumberUtils.add(0.3, 0.6);
NumberUtils.subtract(0.3, 0.2);
NumberUtils.multiply(0.3, 1.5);
NumberUtils.divide(0.3, 0.1);

NumberUtils.multiply(1.2354, 2.365, scale: 2);
NumberUtils.divide(12354, 7, scale: 5, roundingMode: ROUND_HALF_UP);

StringUtils

provider some easy op.

print(StringUtils.isBlank(null));
print(StringUtils.isBlank(""));
print(StringUtils.isBlank("   "));
print(StringUtils.isBlank(" b "));

ListUtils

provider the convert of list to string and string to list.

  List list = [1, 2, 3, 4, 5];
  String text = ListUtils.listToString(list);
  list = ListUtils.stringToList(text);
  text = ListUtils.listToString(list, ",");
  list = ListUtils.stringToList(text, ",");

DateUtils

easy to op datetime. as today, yesterday as set hour,set day as truncate as daysOfTheMonth

DateTime time = DateUtils.parse("2018-12-11");
DateUtils.format(time);
DateUtils.format(time, "yyyy.MM.dd");

DateTime time1 = DateUtils.today();
DateTime time2 = DateUtils.today(hour:9);
DateTime time3 = DateUtils.yesterday();
DateTime time4 = DateUtils.set(DateTime.now(), year:2017);
DateTime time5 = DateUtils.truncate(DateTime.now(), hour:9, minute:30);
DateUtils.truncatedEquals(time1,time2,DateUtils.MONTH);
DateUtils.truncatedEquals(time1,time5,DateUtils.DAY);
DateUtils.daysOfTheMonth(time1);

Getting Started

This project is a starting point for a Dart package, a library module containing code that can be shared easily across multiple Flutter or Dart projects.

For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.