YBCS

data = open('input.txt', 'r').read().split('\n')

def part1(data):
	nums = "123456789"
	ans = 0
	for word in data:
		l = 0
		r = len(word)-1
		print('cur word ', word)
		while word[l] not in nums:

YBCS

// Ex 7.7 

const useCountry = (name) => {
  const [country, setCountry] = useState(null)

  useEffect(() => {
    if (name !== '') {
      axios.get(`https://restcountries.eu/rest/v2/name/${name}?fullText=true`)
        .then((response) => {
          setCountry({...response, found: true})

YBCS

//src/App.js  
  
  const newLike = async (blogObject) => {
    // here
    try {
      const returnedBlog = await blogService.update(
        blogObject.id,
        blogObject.body
      )
      setBlogs(

YBCS

// This is the basics

void main() => runApp(MaterialApp(
//   home: Text('hey ninjas!'),
  // notice : the widgets starts with upper case
  // coma follows every property / widgets 
  home: Scaffold(
    appBar: AppBar(
      title: Text('my first app'),
      centerTitle: true,

YBCS

class Bicycle {
  int cadence;
  int _speed = 0; // makes it private
  // private so explicit -- getter
  int get speed => _speed;
  // implicit getters and setters for all public instance variables
  int gear;

  Bicycle(this.cadence, this.gear);

YBCS

// Impreratice code (not functional-style)
// String scream(int length) => "A${'a' * length}h!";

// main() {
//   final values = [1, 2, 3, 5, 10, 50];
//   for (var length in values) {
//     print(scream(length));
//   }
// }

YBCS

import 'dart:math';

// 2 Create a factory constructor
abstract class Shape {
  factory Shape(String type) {
    if (type == 'circle') return Circle(2);
    if (type == 'square') return Square(2);
    throw 'Can\'t create $type.';
  }
  num get area;