CFP - Docs - appendOne

appendOne

(value: any) => (base: array) => array

Append a value to an array

Try It

const append3 = appendOne(3)

append3([1, 2]) // is [1, 2, 3]

const appendArray3 = appendOne([3])
appendArray3([1, 2]) // is [1, 2, [3]]
const append3 = appendOne(3)

append3([1, 2]) // is [1, 2, 3]

const appendArray3 = appendOne([3])
appendArray3([1, 2]) // is [1, 2, [3]]

Try It

const append3 = appendOne(3)

append3([1, 2]) // is [1, 2, 3]

const appendArray3 = appendOne([3])
appendArray3([1, 2]) // is [1, 2, [3]]
const append3 = appendOne(3)

append3([1, 2]) // is [1, 2, 3]

const appendArray3 = appendOne([3])
appendArray3([1, 2]) // is [1, 2, [3]]

This is useful when we want to add an item to an array. Below, we add an apple to the shopping cart.

Try It

const addApple = appendOne('apple')
const cart = ['bananas', 'chicken']

const updatedCart = addApple(cart)
console.log('updatedCart', updatedCart)
// ['bananas', 'chicken', 'apple']
const addApple = appendOne('apple')
const cart = ['bananas', 'chicken']

const updatedCart = addApple(cart)
console.log('updatedCart', updatedCart)
// ['bananas', 'chicken', 'apple']

Try It

const addApple = appendOne('apple')
const cart = ['bananas', 'chicken']

const updatedCart = addApple(cart)
console.log('updatedCart', updatedCart)
// ['bananas', 'chicken', 'apple']
const addApple = appendOne('apple')
const cart = ['bananas', 'chicken']

const updatedCart = addApple(cart)
console.log('updatedCart', updatedCart)
// ['bananas', 'chicken', 'apple']