xdart-test/lib/main.dart

import 'dart:convert';

import 'package:logger/logger.dart' as L;
import 'package:simple_logger/simple_logger.dart';
import 'package:xdart_test/Bicycle.dart';
import 'package:xdart_test/dio_test.dart';
import 'package:xdart_test/xdart_test.dart' as c_test;

import 'Spacecraft.dart';

String fullName(String firstName, String lastName) => '$firstName$lastName';

//函数命名参数
//可指定默认值
String fullNameAlisa({String firstName, String lastName = '磊'}) {
  return '$firstName $lastName';
}

void show(int msg) {
  print('list value:$msg');
}

//全局日志
final simpleLogger = SimpleLogger();

void main(List<String> arguments) {
  var tmpArray = [1, 2, 3, 4];
  tmpArray.forEach(show);

  print('list data:$tmpArray');
  tmpArray.add(1);
  var asMap = tmpArray.asMap();
  print('to map:$asMap');

  print(fullName('chen', 'lei'));

  //调用的时候，指定参数名
  var tmpName = fullNameAlisa(firstName: '陈');

  print('$tmpName');

  //常量map
  var mMap = const {
    1: 'name',
    'key': '不同类型',
  };
  mMap.forEach((k, v) => {print('key:$k,value:$v')});

  var bike = Bicycle(age: 100);
  var bikeDetail = bike.toJson();
  print('bike info:$bikeDetail');
  var num = 100;
  print('this is num:$num');
  print('Hello world: ${c_test.calculate()}!');

  /**
   *
   */
  var name = '旅行者一号';
  var year = 1977;
  var antennaDiameter = 3.7;
  var flybyObjects = ['木星', '土星', '天王星', '海王星'];
  var image = {
    'tags': ['土星'],
    'url': '//path/to/saturn.jpg'
  };
  image['plants'] = flybyObjects;
  //=> (胖箭头) 简写语法用于仅包含一条语句的函数,该语法在将匿名函数作为参数传递时非常有用
  image.forEach((k, v) => {print('$k,$v')});

  while (year <= 1977) {
    year++;
  }
  print('current year:$year');

  var imageJson = json.encode(image);
  print('image json :$imageJson');

  var spacecraft = Spacecraft.unlaunched('神舟五号');
  spacecraft.describe();

  var orbiter = Orbiter('神州10号', DateTime.now(), 100.0);
  orbiter.describe();

  //带名字的构造函数
  var prettyPrinter = L.PrettyPrinter(
      methodCount: 3, // number of method calls to be displayed
      errorMethodCount: 8, // number of method calls if stacktrace is provided
      lineLength: 120, // width of the output
      colors: true, // Colorful log messages
      printEmojis: false, // Print an emoji for each log message
      printTime: true // Should each log print contain a timestamp
      );
  var logger = L.Logger(
    printer: prettyPrinter,
  );
  var encode = json.encode({'key': '大石头', '1': 109});
  logger.i('this is logger json str:$encode');
  logger.v('Verbose log');
  logger.d('Debug log');
  logger.i('Info log');
  logger.w('Warning log');
  logger.e('Error log');
  logger.wtf('What a terrible failure log');

//  simpleLogger.setLevel(Level.ALL, includeCallerInfo: true);
//  simpleLogger.levelSuffixes = {
//    Level.FINEST: '👾 ',
//    Level.FINER: '👀 ',
//    Level.FINE: '🎾 ',
//    Level.CONFIG: '🐶 ',
//    Level.INFO: '😃',
//    Level.WARNING: '⚠️ ',
//    Level.SEVERE: '‼️ ',
//    Level.SHOUT: '😡 ',
//  };
//  simpleLogger.info('this is logger json str:$encode');

  var dateTime = DateTime.now();
  logger.i('$dateTime');

  getHttp();
}