Skip to content

06weekhigher order #9

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
cfissell50 wants to merge 5 commits into
base: gh-pages
Choose a base branch
from
Open

06weekhigher order #9

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
192f88f
almost f'd my branch up again
cfissell50 Nov 2, 2017
5c77029
map funkadelic
cfissell50 Nov 8, 2017
82af18c
gotcha foreach
cfissell50 Nov 9, 2017
6791b0d
filter
cfissell50 Nov 10, 2017
cc0a84e
donezo
cfissell50 Nov 10, 2017
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
61 changes: 61 additions & 0 deletions 04week/loop.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,61 @@
'use strict';

// Create a new file called loops.js in the /04week folder of your workbook.
// Complete each of the following exercises.
// for loop

// Use a for loop to console.log each item in the array carsInReverse.
const carsInReverse = ['Ford', 'Chevy', 'Tesla', 'Nissan', 'Toyota'];
for (i = 0; i < carsInReverse.length; i++) {
console.log(carsInReverse[i]);
}

// Create an object (an array with keys and values) called persons with the following data:
// firstName: "Jane"
// lastName: "Doe"
// birthDate: "Jan 5, 1925"
// gender: "female"
const persons = {
firstName: "Jane",
lastName: "Doe",
birthDate: "Jan 5, 1925",
gender: "female"
};

// Use a for...in loop to console.log each key.
for (const keys in persons) {
console.log(Object.keys(persons));
}

// Then use a for...in loop and if state to console.log the value associated with the key birthDate.
for (const keys in persons) {
if (keys === 'birthDate') {
console.log(persons[keys]);
}
}

// Use a while loop to console log numbers 1 to 1000
let num = 1;
while(num <= 1000) {
console.log(num);
num++;
}

// Use a do...while loop to console.log the numbers from 1 to 1000.
do {
console.log(num);
num++;
}
while(num <= 1000);

// When is a for loop better than a while loop?
// A forLoop is better when you know the amount of loops you need to do. When you know the cap.

// How is the readability of the code affected?
// A while loop can break easier because of the open ended autonomy. The for loop has a set limit which can be easier to control.

// What is the difference between a for loop and a for...in loop?
// for in loops are used mostly for objects

// What is the difference between a while loop and a do...while loop?
// A while loop goes until something is the argument is false and a do while goes while the condition is true.
45 changes: 41 additions & 4 deletions 06week/higherOrder.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,18 +2,55 @@

const assert = require('assert');

function forEach(arr, callback) {
// Your code here
// Create a forEach() function that takes an array of items and a function that runs the function arr.length number of times.
//
// Create a map() function that takes an array of items and a function that returns an array with each item manipulated by that function.
//
// Create a filter() function that takes an array of items and a function that returns an array with only the items that return true in the function.

// a functon that takes an array and a function that runs the function arr.length

const numArray = [2, 4, 6, 8];

function forEach(arr) {
Copy link

@stu-k stu-k Nov 10, 2017 •
edited
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

From MDN:

The forEach() method executes a provided function once for each array element.

Yours:

Takes an array and console.logs every item in the array + 2.

for (i = 0; i <= arr.length; i ++){
console.log(arr[i] + 2);
}
}

forEach(numArray);

// map consists of an array, a function, and a return array.

function map(arr, callback) {
Copy link

@stu-k stu-k Nov 10, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Yes! Perfect!

// Your code here
const newArr = [];
arr.forEach((item) => {
newArr.push(callback(item));
})
return newArr;
}

map(numArray, (item)=> item + 2);

const numTwoArray = [1,2,3,4,5,6,7,8]

const sortingFunction = (num) => {
if(num > 4) {
return num;
}
}

function filter(arr, callback) {
Copy link

@stu-k stu-k Nov 10, 2017 •
edited
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

From MDN:

The filter() method creates a new array with all elements that pass the test implemented by the provided function.

Yours:

Creates a new array with all elements manipulated by the callback, regardless of whether or not they pass any tests.

// Your code here
const newFilterArr = [];
arr.forEach((num) => {
newFilterArr.push(callback(num));
})
return newFilterArr;
}

filter (numTwoArray, sortingFunction);


function some(arr, callback) {
// Your code here
}
Expand Down
30 changes: 15 additions & 15 deletions package-lock.json
View file
Open in desktop

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.