enum_generator 1.0.1 enum_generator: ^1.0.1 copied to clipboard
This is a lightweight library to create functionality for enum class type and make enum usage much better.
import 'package:enum_generator/src/annotation.dart';
part 'main.g.dart';
@generate
enum Shape { square, circle, triangle }
void main() {
final shape = Shape.circle;
// all cases must be handled
final message = shape.when(
square: () => 'I am a Square',
circle: () => 'I am a Circle',
triangle: () => 'I am a Triangle',
);
print(message); // I am a Circle
// all cases may not be handled but `orElse` cannot be null
final canBeRotated = shape.maybeWhen(
circle: () => false,
orElse: () => true,
);
print('Can be rotate: $canBeRotated'); // false
// equivalent to print(shape == Shape.circle)
print('The shape is circle: ${shape.isCircle}'); // true
print('The shape is Square: ${shape.isSquare}'); // false
print('The shape is Triangle: ${shape.isTriangle}'); // false
}