Composing functions to run in sequence
JavaScriptreadability
Read fire tipRemoving specific values from an array
JavaScript
Going through Set is cool to filter out duplicates. If you need to filter out specific values instead, you can use this helper.
// takes an array of values and a second array of values to take out of it
const without = (array, valuesToRemove) => {
return array.filter(value => !valuesToRemove.includes(value))
}
// all instances of the values to filter out will be removed
without([0, 8, 12, 15, 4, 8, 15, 23], [8, 15]) // ⇒ [0, 12, 4, 23]
// using `.split()` and `.join()`, we can quickly filter values from strings
without('↑↑↓↓←→←→BA'.split(''), ['←', '↑']).join('') // ⇒ '↓↓→→BA'