Reduce Challenge
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/* Popular Ice Cream Totals Quiz
*
* Using the data array and .reduce():
* - Return an object where each property is the name of an ice cream flavor
* and each value is an integer that's the total count of that flavor
* - Store the returned data in a new iceCreamTotals variable
*
* Notes:
* - Do not delete the data variable
* - Do not alter any of the data content
*/
const data = [
{ name: 'Tyler', favoriteIceCreams: ['Strawberry', 'Vanilla', 'Chocolate', 'Cookies & Cream'] },
{ name: 'Richard', favoriteIceCreams: ['Cookies & Cream', 'Mint Chocolate Chip', 'Chocolate', 'Vanilla'] },
{ name: 'Amanda', favoriteIceCreams: ['Chocolate', 'Rocky Road', 'Pistachio', 'Banana'] },
{ name: 'Andrew', favoriteIceCreams: ['Vanilla', 'Chocolate', 'Mint Chocolate Chip'] },
{ name: 'David', favoriteIceCreams: ['Vanilla', 'French Vanilla', 'Vanilla Bean', 'Strawberry'] },
{ name: 'Karl', favoriteIceCreams: ['Strawberry', 'Chocolate', 'Mint Chocolate Chip'] }
];
const iceCreamTotals = data
.reduce( (x, currentValue) => {
return x.concat(currentValue.favoriteIceCreams);
}, []
)
.reduce((x, currentValue) => {
if (!x[currentValue])
x[currentValue] = 1;
else
x[currentValue] = x[currentValue] + 1;
return x;
}, {});
console.log(iceCreamTotals);
JavaScript
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