AAQ-AND-DEV

package edu.duke;

import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.filechooser.FileFilter;


/**

AAQ-AND-DEV

void main(){
  var list = [10, "what", 4, 99];
  var list2 = <Object>[10, "what", 4, 99];
  print(list[1]);
  //print(list.runtimeType); //error in dartPad
  print(list.length);
  for(int i = 0; i<list.length; i++){
    print("Index $i contains ${list[i]}");
  }
  print(list2.runtimeType);

AAQ-AND-DEV

//dart does not do interfaces, but rather all classes
//seem to be able to be implemented
abstract class IsFerocious {
  void intimidate();
  String whatTheFearfulSay();
}

class Animal{
  String  name;
  String lastName;

AAQ-AND-DEV

void main(){
  var num = 34;
  var age = 18;
  var nameTracker;
  
  do {
    print("going...");
    num++;
  }while(num <38);
  

AAQ-AND-DEV

void main(){
  
  var num = 47;
  //is and is!
  print(num is String);
  print(num is! bool);
  print(num is int);
  
  //If statement
  if(num is! int){

AAQ-AND-DEV

void main() {
  var result = 4 / 2;

  print(result);
  print(result.runtimeType);

  var result2 = 4.0 / 2.0;
  print(result2);
  print(result2.runtimeType);

AAQ-AND-DEV

void main() {
  String name = "James";
  String lastName = "Bond";
  int age = 45;
  
  print('his name is ${name + ' ' + lastName} he is $age years old');
  print('his name is $name $lastName he is $age years old');
  print('${lastName.toUpperCase()}');
  
  bool isTheBest = false;

AAQ-AND-DEV

void main() {
  
  //each of these must be initialized and can't be changed
  const pi = 3.14;
  final pi2 = 3.14;
  
  //final collections may be mutable, const collections immutable
  
  const immutableList = [2,3,4,5,6];
  //get 'unsupported operation: add' exception

AAQ-AND-DEV

void main(){
 
  var country = 'United States';
  String name;
  var dynamo;
  var preType = dynamo.runtimeType;
  print(preType);
  //print(name is dynamic);
  //looks like everything is dynamic?!?
  dynamo = 47;