let data = [

  {id: 1, country: 'Germany', population: 83623528},

  {id: 2, country: 'Austria', population: 8975552},

  {id: 3, country: 'Switzerland', population: 8616571}

];

​

let dictionary = Object.assign({}, ...data.map((x) => ({[x.id]: x.country})));

// {1: "Germany", 2: "Austria", 3: "Switzerland"}

​

// Convert array string to dictionary, ex: ['choice_a', 'choice_b'] => {choice_a: true, choice_b: true }

const paramsChecked = Object.assign({}, ...listChecked.map((x) => ({[x]: true})))

var createDict = R.pipe(R.pluck('id'), R.map(R.pair(R.__, 0)), R.fromPairs);

​

var places = [{ id: 'place1id' }, { id: 'place2id' }];

var placesDict = createDict(places);

​

// {"place1id": 0, "place2id": 0}