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Start your free trialTony Brackins
28,766 PointsNested Data Challenge
I got it right. It worked.
However, I don't feel like I did it elegantly.
Please see my answer:
const customers = [
{
name: "Tyrone",
personal: {
age: 33,
hobbies: ["Bicycling", "Camping"]
}
},
{
name: "Elizabeth",
personal: {
age: 25,
hobbies: ["Guitar", "Reading", "Gardening"]
}
},
{
name: "Penny",
personal: {
age: 36,
hobbies: ["Comics", "Chess", "Legos"]
}
}
];
// hobbies should be: ["Bicycling", "Camping", "Guitar", "Reading", "Gardening", "Comics", "Chess", "Legos"]
// Write your code below
let hobbies;
hobbies = customers.reduce((bucket, customer)=>{
let eachHobbie = customer.personal.hobbies.map((hobby)=>{
return hobby
})
return bucket.concat(eachHobbie)
},[]);
1 Answer
Steven Parker
231,184 PointsYou're doing a bit of extra work using "map" and the intermediate variable, you can simplify it down to just this:
hobbies = customers.reduce((bucket, customer) => bucket.concat(customer.personal.hobbies), []);
Tony Brackins
28,766 PointsPerfect. thx!!
Michael Kristensen
Full Stack JavaScript Techdegree Graduate 26,251 PointsMichael Kristensen
Full Stack JavaScript Techdegree Graduate 26,251 PointsWhile the solution Steven Parker suggested, is definitely the more streamlines version, I think the solution that this chain of videos was trying to lead us to was:
Where you use .map() to iterate through the different layers, and then .reduce() the returned arrays.