new class js -advanced

02_advanced/MATERIAL/advanced-js/lesson_01/examples/names_params.js

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+'use strict';
+
+const foo = ({ a = 1, b = 2 }) => `a: ${a}, b: ${b}`;
+
+console.log(foo({ a: 7 })); // => a: 7, b: 2
+console.log(foo({ b: 7 })); // => a: 1, b: 7
+console.log(foo({ a: 7, b: 8 })); // => a: 7, b: 8

02_advanced/MATERIAL/advanced-js/lesson_01/examples/prod_csv.js

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+'use strict';
+
+const productsFromCSV = (csv) =>
+  csv
+    .split('\n')
+    .slice(1)
+    .map((str) => str.trim());
+
+const productsCSV = `name, category, price
+  Klingon Letter Opener, Office Warfare, 19.99
+  Backpack of Holding, Travel, 29.99
+  Tardis Alarmclock, Merchandise, 15.99`;
+
+const products = productsFromCSV(productsCSV);
+console.log(products);

02_advanced/MATERIAL/advanced-js/lesson_01/examples/prod_csv_dest.js

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+'use strict';
+
+const productFromCSV = (productString) => {
+  const [name, category, price] = productString.split(', ');
+  return {
+    name: name,
+    category: category,
+    price: price,
+  };
+};
+
+const product = productFromCSV('Backpack of Holding, Travel, 29.99');
+console.dir(product);

02_advanced/MATERIAL/advanced-js/lesson_01/examples/prod_csv_object.js

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+'use strict';
+
+const productFromCSV = (productString) => {
+  const productArray = productString.split(', ');
+
+  const name = productArray[0];
+  const category = productArray[1];
+  const price = productArray[2];
+
+  return {
+    name: name,
+    category: category,
+    price: price,
+  };
+};
+
+const product = productFromCSV('Backpack of Holding, Travel, 29.99');
+console.dir(product);

02_advanced/MATERIAL/advanced-js/lesson_01/examples/prod_csv_params.js

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+'use strict';
+
+const trim = (s) => s.match(/\W*(.+)\W*/)[1];
+
+const productFromArray = ([name, category, price]) => ({
+  name,
+  category,
+  price,
+});
+
+const productsFromCSV = (csv) =>
+  csv
+    .split('\n')
+    .slice(1)
+    .map(trim)
+    .map((s) => s.split(', '))
+    .map(productFromArray);
+
+const productsCSV = `name, category, price
+  Klingon Letter Opener, Office Warfare, 19.99
+  Backpack of Holding, Travel, 29.99
+  Tardis Alarmclock, Merchandise, 15.99`;
+
+const products = productsFromCSV(productsCSV);
+console.log(products);

02_advanced/MATERIAL/advanced-js/lesson_01/examples/prod_csv_trim.js

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+'use strict';
+
+const trim = (s) => s.match(/\W*(.+)\W*/)[1];
+
+const productFromCSV = (productString) => {
+  const [name, category, price] = productString.split(', ');
+  return {
+    name,
+    category,
+    price,
+  };
+};
+
+const productsFromCSV = (csv) =>
+  csv.split('\n').slice(1).map(trim).map(productFromCSV);
+
+const productsCSV = `name, category, price
+  Klingon Letter Opener, Office Warfare, 19.99
+  Backpack of Holding, Travel, 29.99
+  Tardis Alarmclock, Merchandise, 15.99`;
+
+const products = productsFromCSV(productsCSV);
+console.log(products);

02_advanced/MATERIAL/advanced-js/lesson_01/examples/prod_obj_dest.js

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+'use strict';
+
+const formatProduct = ({ name, price }) =>
+  `* ${name} - buy now for only $${price}`;
+
+const product = {
+  name: 'Klingon Letter Opener',
+  category: 'Office Warfare',
+  price: '19.99',
+};
+
+console.log(formatProduct(product));

02_advanced/MATERIAL/advanced-js/lesson_01/solutions/distance/index.js

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+'use strict';
+
+const distance = (
+  { x: xOrigin, y: yOrigin },
+  { x: xDestination, y: yDestination }
+) => Math.sqrt((yDestination - yOrigin) ** 2 + (xDestination - xOrigin) ** 2);
+
+console.log(distance({ x: 1, y: 1 }, { x: 5, y: 1 }));

02_advanced/MATERIAL/advanced-js/lesson_01/solutions/transformed_name/index.js

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+'use strict';
+
+const logTransformedName = ({ firstName, lastName }) =>
+  console.log(`${lastName}, ${firstName.charAt(0)}.`);
+
+logTransformedName({ firstName: 'Ladislaus', lastName: 'Jones' });