Looping Over a Dictionary in TypeScript

const stock: { [key: string]: number } = {"apples": 5, "pears": 2};

for (const fruit in stock) {
    console.log(fruit, stock[fruit]);
}

// apples 5
// pears 2

Full lesson:

A loop can visit every entry of an object, one at a time. The loop body runs once per key.

for...in gives the keys of an object. Inside the loop, stock[fruit] reads the value of the current key.

You can also get each key with its value in one go. Loop over Object.entries(stock), where each entry is a [key, value] pair.

for (const [fruit, amount] of Object.entries(stock)) {
    console.log(fruit, amount);
}

The order: an object keeps word keys, like these names, in the order they were added. Keys that look like whole numbers come first. Many other languages keep no order. A total or a count comes out the same in any order. Those are safe answers.

Watch out: in and of are different. for...of straight on an object fails with "stock is not iterable".

Your task

A game keeps each player's points in scores. The variables total and count start at 0.

Loop over scores. Add every player's points, scores[name], to total. Count the players with 10 points or more in count.

The code at the bottom prints both.

Expected output:

43
2