Data Types in Dart

1.  Numbers:
Dart supports both integers and floating-point numbers. Integers can be either int or BigInt (for arbitrarily large integers), while floating-point numbers are represented by the double type.

int age = 25;
double height = 6.2;

2. Strings:
Strings represent sequences of characters. In Dart, strings can be defined using either single (‘) or double (“) quotes.

String name = 'John';

3. Booleans:
Booleans represent logical values – true or false. They are used in conditions and control flow statements.

bool isRaining = false;

4. Lists:
Lists in Dart represent ordered collections of objects. They are dynamic in size and can contain elements of different types.

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

5. Maps:
Maps are collections of key-value pairs, where each key is unique. They provide an efficient way to retrieve data based on keys.

Map<String, int> ages = {
'John': 25,
'Alice': 30,
'Bob': 28,
};

6. Sets:
Sets represent a collection of unique items. They are unordered and do not allow duplicate elements.

Set<String> uniqueNames = {'John', 'Alice', 'Bob'};