Flutter for Beginners

Literals

You can use the [] and {} syntaxes to initialize variables such as lists and maps, respectively. These are some examples of literals provided by the Dart language for creating objects of the provided built-in types:

Type	Literal example
int	10, 1, -1, 5, and 0
double	10.1, 1.2, 3.123, and -1.2
bool	true and false
String	"Dart", 'Dash', and """multiline String"""
List	[1,2,3] and ["one", "two", "three"]
Map	{"key1": "val1", "b": 2}

A literal is a notation to represent a fixed value in programming languages. You have likely already used some of these before.