halan · February 18, 2017 22:01
diff --git a/sum.js b/sum.js
 const totalLine = line =>
  line.quantity * line.price;

 const sum = (a, b) => a + b;

 const sumTotal = lines =>
  lines.map(totalLine).reduce(sum, 0);

 console.log(sumTotal(lineItems));
	const totalLine = line =>
	line.quantity * line.price;

	const sum = (a, b) => a + b;

	const sumTotal = lines =>
	lines.map(totalLine).reduce(sum, 0);

	console.log(sumTotal(lineItems));