dart: List / Basic Data types

object-oriented language

1. Primative Types

String "hi"
bool true
int 66
doublue 66.66

2. List

// List<Object> like List<any>
var numbers = [
    1,
    2,
    3,
    4,
    5,
    "A",
  ];

 List<int> numbers1 = [
    1,
    2,
    3,
    4,
    5,
  ];

collection if

var isNumberFive = true;
 List<int> numbers1 = [
    1,
    2,
    3,
    4,
    if(isNumberFive) 5, // possible
  ];

collection for

  var oldFriends = ['John', 'Cat'];

  var addedText = 'haha';

  var newFriends = [
    'lewis',
    'ralph',
    for (var friend in oldFriends) '$addedText $friend'
  ];

string interpolation : 백팁 필요X

	var name = 'A Name';
    var age = 19;
	var greeting = 'Hello World i\'m $name and ${age + 2} old'; //21 old