// //dessinez le résultat en mémoire
const people = [
{
firstName: "John",
lastName: "Doe",
mark: 14,
address: {
street: "Champs Elysées",
city: "Paris",
},
},
{
firstName: "Alice",
lastName: "Martin",
mark: 18,
address: {
street: "Rue de Rivoli",
city: "Paris",
},
},
];
const updatedPeople = people.map(
(person) =>
person.firstName === "John"
? { ...person, mark: 16 }
: person
);