Discussion on: Functional programming basics part 2: Higher order function

[Álvaro Cáceres Muñoz]

Excellent article! By the way, I did not catch why is it useful to return a function as an output... could anybody please give me a practical example? Thanks.

[Stephen Taylor Witte]

If your code had to call a function depending on some other logic, you could return the function to call from the function that decides. Make sense?

[Álvaro Cáceres Muñoz]

You mean something like returning different functions in a switch statement, for example?

[Stephen Taylor Witte]

Right

[Álvaro Cáceres Muñoz]

Now I get it, thanks!

[ysael pepin]

Hi Alvaro,

thanks :)

let's say we want to create a greeter function that will take a greeting copy but we know that this copy will change depending on the context.

we can do:

const greeter = copy  => {
    return name => `${name} ${copy}`
}

const politeGreeter = greeter('you are very welcome here')
const weirdGreeter = greeter('you look weird today!')

console.log(politeGreeter('Ysael')) // Ysael you are very welcome here
console.log(weirdGreeter('Ysael')) // Ysael you look weird today!

witch will allow us to make different greeter functions.

Hope that helps :)