CFP - Docs - getCommonValues

getCommonValues

```
(anArray: ValueCollection[]) => array
```

Return the values found in all collections

const result = getCommonValues([
  ['a', 'b', 'c'],
  ['b', 'c', 'd'],
])
console.log(result)
// is ['b', 'c']
const result = getCommonValues([
  ['a', 'b', 'c'],
  ['b', 'c', 'd'],
])
console.log(result)
// is ['b', 'c']

Try It

const result = getCommonValues([
  ['a', 'b', 'c'],
  ['b', 'c', 'd'],
])
console.log(result)
// is ['b', 'c']
const result = getCommonValues([
  ['a', 'b', 'c'],
  ['b', 'c', 'd'],
])
console.log(result)
// is ['b', 'c']

Sometimes we have a list of grouped values and want those found in all the groups. Below, we want to schedule a morning meeting with Liz, Phil, and Mary. Using their available hours, let's find potential meeting times.

Try It

const hoursAvailable = {
  liz: [7, 8, 9, 10],
  phil: [7, 9, 10, 11],
  mary: [8, 9, 10],
}

const getPotentialMeetingTimes = compose([Object.values, getCommonValues])
const potentialMeetingTimes = getPotentialMeetingTimes(hoursAvailable)
console.log(potentialMeetingTimes)
// is [
//   9,
//   10,
// ]
type HoursAvailable = Record<string, number[]>
const hoursAvailable = {
  liz: [7, 8, 9, 10],
  phil: [7, 9, 10, 11],
  mary: [8, 9, 10],
}

const getPotentialMeetingTimes = compose([
  getValues<HoursAvailable>,
  getCommonValues<number>,
])
const potentialMeetingTimes = getPotentialMeetingTimes(hoursAvailable)
console.log(potentialMeetingTimes)
// is [
//   9,
//   10,
// ]

Try It

const hoursAvailable = {
  liz: [7, 8, 9, 10],
  phil: [7, 9, 10, 11],
  mary: [8, 9, 10],
}

const getPotentialMeetingTimes = compose([
  Object.values,
  getCommonValues,
])
const potentialMeetingTimes =
  getPotentialMeetingTimes(hoursAvailable)
console.log(potentialMeetingTimes)
// is [
//   9,
//   10,
// ]
type HoursAvailable = Record<string, number[]>
const hoursAvailable = {
  liz: [7, 8, 9, 10],
  phil: [7, 9, 10, 11],
  mary: [8, 9, 10],
}

const getPotentialMeetingTimes = compose([
  getValues<HoursAvailable>,
  getCommonValues<number>,
])
const potentialMeetingTimes =
  getPotentialMeetingTimes(hoursAvailable)
console.log(potentialMeetingTimes)
// is [
//   9,
//   10,
// ]