Subjects
PRICING
COURSES
SIGN IN
Start Free Trial
Steven L.
Software Developer at Corelation Inc
Tutor Satisfaction Guarantee
Javascript Programming
TutorMe
Question:

What is a callback function? How do you escape "callback hell"?

Steven L.
Answer:

A callback function is simply just a function that is passed through some method as either an argument of parameter. Callback hell is when you have many nested callback functions in one method. There are several ways to fix it: 1) Have function names for the callback functions. 2) abstract callback functions into a helper method. 3) Use libraries like Async.js or Promise.js that help synchronize your functions.

Java Programming
TutorMe
Question:

How many times does the word, "TutorMe", print out? for(int i = 0; i < 120; i++){ if(i%3 == 0) System.out.println("TutorMe"); }

Steven L.
Answer:

"TutorMe" gets printed out 40 times.

Algebra
TutorMe
Question:

Ana has 5 apples. John has the same number of apples as David,. There are 25 apples total. How many apples do John and David have?

Steven L.
Answer:

John and David both have 10 apples.

Send a message explaining your
needs and Steven will reply soon.
Contact Steven
Ready now? Request a lesson.
Start Session
FAQs
What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Session" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.