CFP - Docs - prependAll

prependAll

(prepended: array) => (base: array) => array

Prepend one array to another

Try It

const prepend12 = prependAll([1, 2])
prepend12([3, 4]) // is [1, 2, 3, 4]

const prepend1AndArray2 = prependAll([1, [2]])
prepend1AndArray2([3, 4]) // is [1, [2], 3, 4]
const prepend12 = prependAll([1, 2])
prepend12([3, 4]) // is [1, 2, 3, 4]

const prepend1AndArray2 = prependAll([1, [2]])
prepend1AndArray2([3, 4]) // is [1, [2], 3, 4]

Try It

const prepend12 = prependAll([1, 2])
prepend12([3, 4]) // is [1, 2, 3, 4]

const prepend1AndArray2 = prependAll([1, [2]])
prepend1AndArray2([3, 4]) // is [1, [2], 3, 4]
const prepend12 = prependAll([1, 2])
prepend12([3, 4]) // is [1, 2, 3, 4]

const prepend1AndArray2 = prependAll([1, [2]])
prepend1AndArray2([3, 4]) // is [1, [2], 3, 4]

Sometimes we want to prepend an array. Below, we have some songs queued up. They're good songs, but we're jonesing to hear "Superstition" and "Once in a Lifetime," so let's prepend those.

Try It

const musicQueue = ['Like a Rolling Stone', 'Smells Like Teen Spirit']
const prependMySongs = prependAll(['Superstition', 'Once in a Lifetime'])

const updatedQueue = prependMySongs(musicQueue)
console.log(updatedQueue)
// [
//   Superstition
//   Once in a Lifetime
//   Like a Rolling Stone
//   Smells Like Teen Spirit
// ]
const musicQueue = ['Like a Rolling Stone', 'Smells Like Teen Spirit']
const prependMySongs = prependAll(['Superstition', 'Once in a Lifetime'])

const updatedQueue = prependMySongs(musicQueue)
console.log(updatedQueue)
// [
//   Superstition
//   Once in a Lifetime
//   Like a Rolling Stone
//   Smells Like Teen Spirit
// ]

Try It

const musicQueue = [
  'Like a Rolling Stone',
  'Smells Like Teen Spirit',
]
const prependMySongs = prependAll([
  'Superstition',
  'Once in a Lifetime',
])

const updatedQueue = prependMySongs(musicQueue)
console.log(updatedQueue)
// [
//   Superstition
//   Once in a Lifetime
//   Like a Rolling Stone
//   Smells Like Teen Spirit
// ]
const musicQueue = [
  'Like a Rolling Stone',
  'Smells Like Teen Spirit',
]
const prependMySongs = prependAll([
  'Superstition',
  'Once in a Lifetime',
])

const updatedQueue = prependMySongs(musicQueue)
console.log(updatedQueue)
// [
//   Superstition
//   Once in a Lifetime
//   Like a Rolling Stone
//   Smells Like Teen Spirit
// ]