CFP - Docs - discardLast

discardLast

(num: number) => (sequence: Sequence) => Sequence

Discard the last num values

Try It

const discardLast2 = discardLast(2)

discardLast2(['a', 'b', 'c', 'd']) // is ['a', 'b']
discardLast2('abcd') // is 'ab'
const discardLast2 = discardLast(2)

discardLast2(['a', 'b', 'c', 'd']) // is ['a', 'b']
discardLast2('abcd') // is 'ab'

Try It

const discardLast2 = discardLast(2)

discardLast2(['a', 'b', 'c', 'd']) // is ['a', 'b']
discardLast2('abcd') // is 'ab'
const discardLast2 = discardLast(2)

discardLast2(['a', 'b', 'c', 'd']) // is ['a', 'b']
discardLast2('abcd') // is 'ab'

Sometimes we have sorted data and don't need elements from the end. Below, we are starting a game. We're rolling to see our character's strength by casting four dice and removing the lowest two. Let's find our strength!

Try It

const rolls = [1, 6, 2, 4]

const orderDesc = order(withNumbersDescending)
const removeTwoLowestRolls = discardLast(2)

const getCharacterStat = compose([orderDesc, removeTwoLowestRolls, sumValues])

const strength = getCharacterStat(rolls)
console.log(strength) // is 10
const rolls = [1, 6, 2, 4]

const orderDesc = order(withNumbersDescending)
const removeTwoLowestRolls = discardLast(2)

const getCharacterStat = compose([orderDesc, removeTwoLowestRolls, sumValues])

const strength = getCharacterStat(rolls)
console.log(strength) // is 10

Try It

const rolls = [1, 6, 2, 4]

const orderDesc = order(withNumbersDescending)
const removeTwoLowestRolls = discardLast(2)

const getCharacterStat = compose([
  orderDesc,
  removeTwoLowestRolls,
  sumValues,
])

const strength = getCharacterStat(rolls)
console.log(strength) // is 10
const rolls = [1, 6, 2, 4]

const orderDesc = order(withNumbersDescending)
const removeTwoLowestRolls = discardLast(2)

const getCharacterStat = compose([
  orderDesc,
  removeTwoLowestRolls,
  sumValues,
])

const strength = getCharacterStat(rolls)
console.log(strength) // is 10