erluxman

void main() {
  f2(f1, 3);
  f2(f1, 4);
  f2(f1, 7);
  f2(f1, 9);
}

f1(int evenOrOdd) {
  print("$evenOrOdd is ${evenOrOdd % 2 == 0 ? "Even" : "Odd"}");
}

erluxman

import 'package:flutter/material.dart';

void main() => runApp(ProductiveApp());

class ProductiveApp extends StatefulWidget {
  @override
  _ProductiveAppState createState() => _ProductiveAppState();
}

class _ProductiveAppState extends State<ProductiveApp> {

erluxman

void main() {
  User()
    ..firstName = "Laxman"
    ..lastName = " Bhattarai"
    ..age = 18
    ..printUser();
}

class User {
  String firstName;

erluxman

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(body: SliverAppBarDemo()),

erluxman

      void main() {
        group("Exception/Error testing", () {
          
          test("test method that throws errors", () {
            expect(_testError(fails: false), false);
            expect(() => _testError(fails: true), throwsA(isA<FooError>()));     
          });
          
        });
      }

erluxman

void main() {
    var numbers = [1, 2, 3];
    var names = ["Smith", "Laxman"];
    List<int> nullList;
    List<int> getLostNumbers() => null;

    //This is long way
    print("\n\n\nLong Way");
    var list = List();
    list.addAll(numbers);

erluxman

	void main() {
        var member = CallableClass();                       
        member("Flutter");
    }

    class CallableClass{
      	// Define method with name `call` which will be called.    
        call(String name){
            print("Name is $name");
        }

erluxman

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

erluxman

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

erluxman

void main() {
  normalFunction("Laxman", "Bhattarai", 26, 65);

  optionalFunction("Laxman", "Bhattarai");
  optionalFunction("Laxman", "Bhattarai", age: 26);
  optionalFunction("Laxman", "Bhattarai", weight: 65);
  optionalFunction("Laxman", "Bhattarai", weight: 65, age: 26);

  positionalFunction("Laxman", "Bhattarai");
  positionalFunction("Laxman", "Bhattarai", 26);