In Dart and Flutter, you can perform data type conversions using various methods and constructors provided by the language. Here are some commonly used data type conversions:

String to int:

String stringValue = '123';
int intValue = int.parse(stringValue);
Code language: JavaScript (javascript)

String to double:

String stringValue = '3.14';
double doubleValue = double.parse(stringValue);
Code language: JavaScript (javascript)

int to String:

int intValue = 42;
String stringValue = intValue.toString();
Code language: JavaScript (javascript)

double to String:

double doubleValue = 3.14;
String stringValue = doubleValue.toString();
Code language: JavaScript (javascript)

String to boolean:

String stringValue = 'true';
bool boolValue = stringValue.toLowerCase() == 'true';
Code language: JavaScript (javascript)

boolean to String:

bool boolValue = true;
String stringValue = boolValue.toString();
Code language: JavaScript (javascript)

String to DateTime:

String dateString = '2023-06-23';
DateTime dateTimeValue = DateTime.parse(dateString);
Code language: JavaScript (javascript)

DateTime to String:

DateTime dateTimeValue = DateTime.now();
String dateString = dateTimeValue.toString();
Code language: JavaScript (javascript)

Object to a specific type:

Object obj = 'Hello';
String stringValue = obj as String;
Code language: JavaScript (javascript)