Destructuring values returned by functions
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Posted on If a function returns an object, we can destructure the result to take out only the values we need. We don’t need to assign the returned value to an object first.
// this function does some math and returns multiple results
const doSomeMath = array => {
const sum = array.reduce((sum, value) => sum + value, 0)
// we return an object with three values instead of just a single value
return {
min: Math.min(...array),
max: Math.max(...array),
average: sum / array.length
}
}
// we can pick the values we want; we can skip `min` if we don’t need it
const { max, average } = doSomeMath([15, 4, 23, 16, 42, 8])
// max: 42
// average: 18// this function does some math and returns multiple results
const doSomeMath = array => {
const sum = array.reduce((sum, value) => sum + value, 0)
// we return an object with three values instead of just a single value
return {
min: Math.min(...array),
max: Math.max(...array),
average: sum / array.length
}
}
// we can pick the values we want; we can skip `min` if we don’t need it
const { max, average } = doSomeMath([15, 4, 23, 16, 42, 8])
// max: 42
// average: 18// this function does some math and returns multiple results
const doSomeMath = array => {
const sum = array.reduce((sum, value) => sum + value, 0)
// we return an object with three values instead of just a single value
return {
min: Math.min(...array),
max: Math.max(...array),
average: sum / array.length
}
}
// we can pick the values we want; we can skip `min` if we don’t need it
const { max, average } = doSomeMath([15, 4, 23, 16, 42, 8])
// max: 42
// average: 18// this function does some math and returns multiple results
const doSomeMath = array => {
const sum = array.reduce((sum, value) => sum + value, 0)
// we return an object with three values instead of just a single value
return {
min: Math.min(...array),
max: Math.max(...array),
average: sum / array.length
}
}
// we can pick the values we want; we can skip `min` if we don’t need it
const { max, average } = doSomeMath([15, 4, 23, 16, 42, 8])
// max: 42
// average: 18