CFP - Docs - mFillRangeWith

mFillRangeWith

(value: any, range: Range) => (anArray: array) => anArray

Fill an array range with value

Ranges in Common FP are inclusive

Consider fillRange instead.
This is for the uncommon case where mutating anArray is required.

Try It

const range = { startIdx: 1, endIdx: 2 }
const zeroOutRange = mFillRangeWith(0, range)

const arr = [1, 2, 3, 4]
const mutatedArr = zeroOutRange(arr)
console.log(mutatedArr === arr) // is true
console.log(arr) // is [1, 0, 0, 4]
const range = { startIdx: 1, endIdx: 2 }
const zeroOutRange = mFillRangeWith(0, range)

const arr = [1, 2, 3, 4]
const mutatedArr = zeroOutRange(arr)
console.log(mutatedArr === arr) // is true
console.log(arr) // is [1, 0, 0, 4]

Try It

const range = { startIdx: 1, endIdx: 2 }
const zeroOutRange = mFillRangeWith(0, range)

const arr = [1, 2, 3, 4]
const mutatedArr = zeroOutRange(arr)
console.log(mutatedArr === arr) // is true
console.log(arr) // is [1, 0, 0, 4]
const range = { startIdx: 1, endIdx: 2 }
const zeroOutRange = mFillRangeWith(0, range)

const arr = [1, 2, 3, 4]
const mutatedArr = zeroOutRange(arr)
console.log(mutatedArr === arr) // is true
console.log(arr) // is [1, 0, 0, 4]

Sometimes we want to set an array range to a value. Below, we had an issue at our soup factory. No salt was added from 3pm to 5. Now we have to throw away all that soup! Let's reset the hourly numbers to zero.

Try It

const cansProducedHourly = [2984, 3012, 3007, 2995, 3001, 3009]

const hours3Thru5 = { startIdx: 2, endIdx: 4 }
const clearBadCans = mFillRangeWith(0, hours3Thru5)
clearBadCans(cansProducedHourly)
console.log(cansProducedHourly)
// is [2984, 3012, 0, 0, 0, 3009]
const cansProducedHourly = [2984, 3012, 3007, 2995, 3001, 3009]

const hours3Thru5 = { startIdx: 2, endIdx: 4 }
const clearBadCans = mFillRangeWith(0, hours3Thru5)
clearBadCans(cansProducedHourly)
console.log(cansProducedHourly)
// is [2984, 3012, 0, 0, 0, 3009]

Try It

const cansProducedHourly = [
  2984, 3012, 3007, 2995, 3001, 3009,
]

const hours3Thru5 = { startIdx: 2, endIdx: 4 }
const clearBadCans = mFillRangeWith(
  0,
  hours3Thru5
)
clearBadCans(cansProducedHourly)
console.log(cansProducedHourly)
// is [2984, 3012, 0, 0, 0, 3009]
const cansProducedHourly = [
  2984, 3012, 3007, 2995, 3001, 3009,
]

const hours3Thru5 = { startIdx: 2, endIdx: 4 }
const clearBadCans = mFillRangeWith(
  0,
  hours3Thru5
)
clearBadCans(cansProducedHourly)
console.log(cansProducedHourly)
// is [2984, 3012, 0, 0, 0, 3009]