Data Types In Dart

Data types in dart :

Data Types In Dart

Type of data types:
1) Built in data type
2) Numbers

  • Build in data type
    1) Numbers
    2) Strings
    3) Booleans
    4) Lists
    5) Maps
  • Number
    1) Integer
    2) Double

int (Integer)

  • It is store value Natural Numbers and their negative. For example (, …-3, -2, -1, 0, 1, 2, 3,…)
    Example: int a=7;

Strings

  • sequence of characters or bunch of characters. For example store name, store pernoal details etc.
    String webname=”www.fluttertutorial.in”;
    String flutterTutorial = ‘www.fluttertutorial.in’;

Boolean

  • It is check conditional loginc true or false.
    bool x = 2 > 4

Lists

  • Arrays are not used in dart.
  • collection of ordered group of objects or different elements of the same type.
 void main(){
  List store = new List();   // int is  type of data
  store = [1,2,3,4,5];
  print(store); 
 } 

Maps

  • Storing key – value.
 void main(){
  Map login = new Map();
  login={'Username':'Flutter Tutorial','Password':'123456'};
  print(login);
 }

Dynamic Keyword in dart

  • Statically typed – String, Boolean, Map etc.
  • Dynamic data type is use run time.
 void main() {
 dynamic test = 5; // int
 dynamic webname = "FlutterTutorial";  //String
 dynamic check = true; //Boolean  
 }