dartsunfish/lib/tester.dart

import 'dart:convert';

import 'package:dartsunfish/src/extentions.dart';

class MyItem {
  int id;
  String name;
  MyItem({
    required this.id,
    required this.name,
  });

  MyItem copyWith({
    int? id,
    String? name,
  }) {
    return MyItem(
      id: id ?? this.id,
      name: name ?? this.name,
    );
  }

  Map<String, dynamic> toMap() {
    return {
      'id': id,
      'name': name,
    };
  }

  factory MyItem.fromMap(Map<String, dynamic> map) {
    return MyItem(
      id: map['id'],
      name: map['name'],
    );
  }

  String toJson() => json.encode(toMap());

  factory MyItem.fromJson(String source) => MyItem.fromMap(json.decode(source));

  @override
  String toString() => 'MyItem(id: $id, name: $name)';

  @override
  bool operator ==(Object other) {
    if (identical(this, other)) return true;

    return other is MyItem && other.id == id && other.name == name;
  }

  @override
  int get hashCode => id.hashCode ^ name.hashCode;
}

void main(List<String> args) {
  final someList = List.generate(
      10,
      (i) => {
            {i, 's'}: 'See item $i'
          });

  bool root = true;

  final someSet = Set.from(List<MyItem>.generate(10, (index) => MyItem(id: index, name: 'name $index')).toSet());

  print(someSet.contains(MyItem(id: 2, name: 'name 2')) && !root);

  print(someList);
  final first = someList[0].get({0, 's'});
  print('I found $first');

  final someMap = {
    {1, 'S1'}: 'See item 1',
    {2, 'S2'}: 'See item 1'
  };

  var s1 = {
    1,
    'S1',
    22.23,
    ['q', 12]
  };
  var s2 = {
    1,
    'S1',
    22.23,
    ['q', 12]
  };

  var s3 = {
    1: 'S1',
    22.23: ['q', 12]
  };
  var s4 = {
    1: 'S1',
    22.23: ['q', 12]
  };

  print('Equality test gives ${s1.isEqual(s2)}');
  print('Equality test gives ${s3.isEqual(s4)}');

  print(someMap.get({1, 'S2'}, or: 'Oops'));

  var ff = someList.firstWhere((element) => element.get({1, 's'}) != null, orElse: () => someList[0]);
  // print('In map ${someMap.entries.toList()}');
  print('In map $ff');

  for (var i in List.generate(10, (index) => index + 1)) {
    print('III = $i');
  }

  Iterator<String> getStringIterator(String s) => s.runes.map((r) => String.fromCharCode(r)).iterator;

  final str = 'Hello, World';

  final strList = str.split('');

  strList.forEachIndexed((e, i) {
    if (e != 'o') {
      print('See $e');
    } else {
      return;
    }
  });

  final strIter = getStringIterator(str);
  for (var i = 0; i < str.runes.length; i++) {
    strIter.moveNext();
    print('In map ${strIter.current}');
    print('And ${String.fromCharCode(str.runes.elementAt(i))}');
  }
}