What are Higher Order Functions? (JS)

HoF.md

Simple definitions for HoF's:

Major Concepts:

• A function that will take at least one function as an argument (Primary concept)
• Does not mutate any state
• Can return a function (?? Wikipedia)

Examples:

const friends = [  
  { name: 'John', species: 'human', inventory: 'coffee' },  
  { name: 'Steve', species: 'megatoad', inventory: 'coffee' },  
  { name: 'Xerses', species: 'alien', inventory: 'brain juice' },  
]  
let bestFriends = friends.filter( (friend) => { return friend.inventory === 'coffee' });  
console.log(bestFriends)