Kyle continues his demonstration of the solution to exercise 4. He creates a function that takes an array of values and adds them together using the add2() function.
(bright music)…- [Student] Can we not call add inside that?…- We are calling add right here on line 12.…- [Student] Oh, okay.…- Okay?…Alright, now it starts to get more interesting,…and a little more challenging.…We'll see how close you've been paying attention.…I now want you, 'cause we have this add two function…which takes two functions.…
And, if I wanted to be able to take three functions…I could make an add three, or an add four, or an add five,…but I want you to make an add n.…I want you to make a function that takes…a list of an arbitrary number of functions…and adds all of those function return results together,…but that function has to use add two.…There's a variety of ways that you could define your add n.…
Let's just leave the add two here,…so that we see that in comments.…There's a variety of ways to define…the add n that we're talking about.…But, what I want you to do is instead of it receiving…parameters, it's going to receive a single array.…So, I'll give you that hint.…It's going to receive a single array.…
This course was created by Frontend Masters. It was originally released on 03/08/2016. We're pleased to host this training in our library.
- Pure functions
- Manual composition
- Composition utility
- List operations
Skill Level Intermediate
1. Pure Functions
2. Composition and Immutability
3. Closure and Recursion
4. List Operations
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