`objective-reasoning`

Working with objects! We'll write some functions that show us the power and flexibility of objects. As usual start of by:

Fork this repo
Clone it to your computer
run npm install to install the jest dependency
run npm run test to run the tests

1. `isAdmin`

Write a function, isAdmin that takes in a user object and returns true if the user is an admin, as indicated by their userRole key. All admins' userRole attributes are equal to 'ADMIN'.

A user object will look like this:

{
    firstName: String,
    lastname: String,
    userRole: String
}

Examples

isAdmin({
    firstName: 'Eileen',
    lastName: 'Smith',
    userRole: 'REGULAR_USER'
})
=> false

isAdmin({
    firstName: 'Ian',
    lastName: 'Rogers', 
    userRole: 'USER_MANAGER'
})
=> false

isAdmin({
    firstName: 'Jeff',
    lastName: 'Wilson', 
    userRole: 'ADMIN'
})
=> true

2. `getEmail`

Write a function, getEmail, that given a user object, return the users' Code Immersives email. We'll assume that a Code Immersives email is always in [email protected] form.

Examples

getEmail({
    firstName: 'Brian'
    lastName: 'Carela'
})
=> '[email protected]'

getEmail({
    firstName: 'Anthony',
    lastName: 'DeRosa'
})
=> '[email protected]'

3. `getPlaylistLength`

Write a function, getPlaylistLength that takes in a playlist and returns the number of songs in the playlist

A playlist object will look like this:

{
    name: 'my jams',
    songs: ['Vienna', 'Hey Ya!']
}

Examples

getPlaylistLength({
    name: 'hits',
    songs: ['The Distance', 'Ruby Tuesday', 'Old Town Road (remix)']
})
=> 3

getPlaylistLength({
    name: 'empty playlist',
    songs: []
})
=> 0

4. `getHardestHomework`

Write a function, getHardestHomework that takes in an array of homework objects and returns the name of the hardest homework assignment. The hardest homework will be the one that has the lowest average score. If the array contains no homeworks, return an empty string.

Examples

getHardestHomework([])
=> ''

getHardestHomework([
    { name: 'homework 1', averageScore: 99 },
    { name: 'homework 2', averageScore: 1 }
])
=> 'homework 2'

getHardestHomework([
    { name: 'hip-hip-array', averageScore: 12 },
    { name: 'wait-i-object', averageScore: 200 },
    { name: 'objective-reasoning', averageScore: 25 }
])
=> 'hip-hip-array'

5. `createPhonebook`

Write a function, createPhonebook, that creates a phonebook object from an array of names and phone numbers.

Examples

createPhonebook(['Jimothy', 'Maria', 'Karl'], ['123-456-7890', '000-000-0000', '999-888-7766'])
=> {
    'Jimothy': '123-456-7890',
    'Maria': '000-000-0000',
    'Karl': '999-888-7766'
}

createPhonebook(['Melissa', 'Andre'], ['206-111-2233', '321-123-2424'])
=> {
    'Melissa': '206-111-2233',
    'Andre': '321-123-2424'
}

createPhonebook([], []);
=> {}

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