function sumOfEvenSquare(array) {
    const evenArray = array.filter(v => v % 2 === 0);
    const squaredArray = evenArray.map(v => v * v);
    const sum = squaredArray.reduce((r, v) => r + v);
    return sum;
}



function sumOfEvenSquare(array) {
    return array.filter(v => v % 2 === 0).map(v => v * v).reduce((r, v) => r + v);
}



function sumOfEvenSquare(array) {
    return array
        .filter(v => v % 2 === 0)
        .map(v => v * v)
        .reduce((r, v) => r + v);
}



function nameAndAgeOfFirstUser(users) {
    const firstUser = users[0];
    return [
        firstUser.name,
        firstUser.age,
    ];
}



function nameAndAgeOfFirstUser(users) {
    return [
        users[0].name,
        users[0].age,
    ];
}



array.filter(v => v % 2 === 0)



// 何かの処理...
{
    const u = users[0];
    console.log('name={u.name}, age={u.age}');
}
// 何らかの処理

