FABU Utils
Extensions and other utilities for Dart and Flutter projects.
Examples
Extensions
void main() {
' '.isNullOrWhitespace;
// output: true
['Item 1', 'Item 2', 'Item 3'].joinOxford();
// output: 'Item 1, Item 2, and Item 3'
[1, 2, 3].interlaceWith([4, 5, 6]);
// output: [1, 4, 2, 5, 3, 6]
[1, 2, 3].separatedBy((i) => 0);
// output: [1, 0, 2, 0, 3]
[
Container(color: Colors.green),
Container(color: Colors.red),
Container(color: Colors.blue),
].separatedBy((i) => Container(color: Colors.yellow));
// output:
// [
// Container(color: Colors.green),
// Container(color: Colors.yellow),
// Container(color: Colors.red),
// Container(color: Colors.yellow),
// Container(color: Colors.blue),
// ]
}
IoC container
Singleton
void main() {
// Register class type
Ioc().registerSingle(() => TestClass());
// Get singleton instance
Ioc().get<TestClass>().test();
// prints: test called
}
class TestClass {
void test() {
print('test called');
}
}
Factory
void main() {
int i = 0;
// Register class type
Ioc().register(() => TestClass(i++));
// Get instance of TestClass
Ioc().get<TestClass>().test();
// prints: test called 0
// Get instance of TestClass (creates new instance)
Ioc().get<TestClass>().test();
// prints: test called 1
// or a simplified version using only int as type, creating a counter
int count = 0;
Ioc().register(() => count++);
Ioc().get<int>(); // returns 0
Ioc().get<int>(); // returns 1
}
class TestClass {
TestClass(this.i);
final int i;
void test() {
print('test called $i');
}
}