Ramda functional exercise 4 - Get users in their thirties

ramda_exercise4.js

const R = require('ramda')

const json = {
		users: [
			{id: 3, name: "Thad", age: 36},
			{id: 5, name: "Lucian", age: 23},
			{id: 2, name: "Justine", age: 29},
			{id: 4, name: "Katie", age: 26},
			{id: 0, name: "Jerold", age: 52},
			{id: 1, name: "Nona", age: 33}
		]
}

// exercise 4: get users in their thirties

const isInThirties = R.both(
    R.gt(R.__, 29),
    R.lt(R.__, 40)
)

const userIsInThirties = R.propSatisfies(isInThirties, 'age')

const usersInThirties = R.filter(userIsInThirties)(json.users)

console.log(usersInThirties)