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JavaScript

Wouldn't 'Array.flat()' work instead of .reduce and .map? attempted to do it but didn't work

const users = [
    {
        name: 'Samir',
        age: 27,
        favoriteBooks: [
            {title: 'The Iliad'},
            {title: 'The Brothers Karamazov'}
        ]
    },
    {
        name: 'Angela',
        age: 33,
        favoriteBooks: [
            {title: 'Tenth of December'},
            {title: 'Cloud Atlas'},
            {title: 'One Hundred Years of Solitude'}
        ]
    },
    {
        name: 'Beatrice',
        age: 42,
        favoriteBooks: [
            {title: 'Candide'}
        ]
    }
];




//This didnt seem to work//
let iii ;

iii = users.flat(3);

console.log(iii);


//this code was for the challenge **** Please look above
// const movieTitles = users.filter( onlyTitles=> onlyTitles.favoriteBooks
//     .map( books=> books.favoriteBooks))
//     .reduce((lib, book) => [...lib,...book.favoriteBooks], [] );
//
//
// console.log(movieTitles);

Note: it would say that '.flat is not a function', I also tried with the depth being 'infinity'

1 Answer

Steven Parker
Steven Parker
229,788 Points

The test library might not include "flat". But access to the function wouldn't help, because this array is already "flat".

The task here is to get attributes from the objects of the array, which is not what "flat" does.

Thanks, looks like I got confused with the concept of 'flat'. Thanks again