CODEWITHSUNDEEP
javascriptarrays
Anthony G. Helou
Anthony G. Helou

Reputation: 103

Reducing Array inside of an array javascript

I have this Data Structure :

const data = [

{ id: 1, urlName: 'balance-at-work', offices: [ { location: 'Sydney, Australia', in_range: false }, ], }, { id: 2, urlName: 'spring-development', offices: [ { location: 'Banbury, Oxfordshire', in_range: true }, ], }, { id: 3, urlName: 'talent-lab', offices: [ { location: 'México City, Mexico', in_range: false }, { location: 'London, UK', in_range: true }, ], }, ];

I want to reduce the offices array inside each object by using the great circle distance formula.

So far i have been able to calculate the great circle distance and add a dist key inside each office object. What i am having issue with, is a clean way to remove all the objects inside each offices array for each user when dist is greater than a given range.

Upvotes: 0

Views: 77

Answers (1)

Ben Stephens
Ben Stephens

Reputation: 3371

A simple way to do this might be something like the following (is_office_in_range is just a placeholder for however you determine whether an office should be included or not):

const data = [
  {
    id: 1,
    urlName: 'balance-at-work',
    offices: [
      {
        location: 'Sydney, Australia',
      },
    ],
  },
  {
    id: 2,
    urlName: 'spring-development',
    offices: [
      {
        location: 'Banbury, Oxfordshire, UK',
      },
    ],
  },
  {
    id: 3,
    urlName: 'talent-lab',
    offices: [
      {
        location: 'México City, Mexico',
      },
      {
        location: 'London, UK',
      },
    ],
  },
];

const is_office_in_range = (office) => office.location.endsWith('UK');

const res = data
  .map((company) => ({
    ...company,
    offices: company.offices.filter((office) => is_office_in_range(office))
  }))
  .filter((company) => company.offices.length);

console.log(res);

Upvotes: 1

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