nikli2009

{
    "keys": [
        {
            "kty":"RSA",
            "use": "sig",
            "kid":"2QQqDBfKJn2OwmllGzfuW8B8rJG2zaDUP8vNCAprJ18",
            "e":"AQAB",
            "n":"r_rk7ISYQgq6TuDJSxWspm3eJQNiMjRu82F7HDm89B9TNnUvdHfCz5mJbrIUo_u4K0p1bFVrpjjZiBFTfWAduWchDkw9Eseq8_oZ7xANiFwRSuXgUfGpyk7WmaN0E3tcKN1gLTJQAa0MqtwqcuErLpNjoLLau2CAHeHe3e_lhHZIG6LLf7e_zchkosUFP0M5ntgg84w0AZS3kleqrqduC7l4giWRjI3LAuO3lba7LqCnJ3xUc4eDeQ6ZfRJIgDO8iKr8c2cOc1W_iRJKVCF9QyOKj24L23Sio6gFH6mz_OAKyn8Guzkli9eqz29eRaz_1lwmEe6KlgRMm0cS8VvHZQ"
         }
    ]

nikli2009

const customFontBase64 =
        'data:application/font-woff;base64,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

nikli2009

var a = { n: 1}
a.x = a;

console.log(a, a.x);
// {n:1, x: { ... }, {n:1, x: { ... }}

var b = { n: 1}
b.x = b = { n:2};

console.log(b, b.x); 

nikli2009

void main() {
  print(' '.padLeft(10,'-') + 'Exception Handling' + ' '.padRight(10,'-'));
  // Error Catching
  try {
    CalculatePerformanceByTaskCompleted(-50);
  } catch(e) {
    print(e);
  }
}

nikli2009

void main() {
  print(' '.padLeft(10,'-') + 'Function as Parameter' + ' '.padRight(10,'-'));
  
  Person newUser = Person(talk: trashTalk);
  
  newUser.talk(); // Try dunk it!
  
  newUser.talk = friendlyTalk;
  
  newUser.talk(); // You can do it.

nikli2009

void main() {
  print(' '.padLeft(10,'-') + 'Ternary Operator' + ' '.padRight(10,'-'));
  
  bool expression = true;
  
  // Logic -> used in business logic of binary/simple strategy;
  expression ? {
    print(true)
  } : {
    print(false)

nikli2009

void main() {
  var orderType = OrderType.Domestic;
  // ENUM item -> index
  print(' '.padLeft(10,'-') + 'Enum index' + ' '.padRight(10,'-'));
  print(orderType.index);
  
  // ENUM item -> value
  print(' '.padLeft(10,'-') + 'Enum value' + ' '.padRight(10,'-'));
  print(orderType);
}

nikli2009

void main() {
  // handle data
  // use Class is kind of overkill from Design Perspective
  
  var user = {
    'name': 'Nikk.Li',
    'age': 28,
    'height': 171.0,
    'weight': 63,
    'children': null

nikli2009

void main() {
  List<String> usernames = ['lana', 'del', 'rey', 'hope', 'sandoval'];
  
  // add => bottom
  usernames.add('nikk');
  print(usernames); //[lana, del, rey, hope, sandoval, nikk]
  
  // add all
  usernames.addAll(['wenyan', 'li']);
  print(usernames); // [lana, del, rey, hope, sandoval, nikk, wenyan, li]

nikli2009

void main() {
  // ? Operator
  Coke myCoke = Coke(volume: 600);
  // this is unsafe as anyone can change volume before printing.
  // for example, myCoke = null
  // then it gonna throw an error.
  
  print(myCoke.volume); // 600
  
  // so let's use ? as null check operator to ensure this won't happen