Guide on using a pipe feature with varying arguments when the main function is called

I am delving into functional programming for the first time and have a query regarding using pipes.

Imagine I have this particular function:

const updateArray = R.curry((index, value, array) => 
                    Object.assign([], array, {[index]: value}))

This function alters the value of an element in an array based on a specified index.

Now, my goal is to utilize this function twice (using pipe) to create a swap functionality between two elements in the array.

However, I'm struggling with how to go about implementing it. Here's my attempt:

const swapElements = (array, x, y) => 
                R.pipe(updateArray(y, array[x], updateArray(x, array[y])))

The issue here lies in the fact that the curried version of updateArray (after receiving two arguments) expects an array input, while I am passing 3 arguments to the swapElements function.

Is there a way to use pipe when the main function receives different arguments compared to the initial function within the pipe?

Thank you.

Answer №1

By utilizing curried functions, you have the capability to partially apply the initial arguments prior to performing the piping process:

const reorganize = (array, indexA, indexB) => R.pipe(updateArray(indexA, array[indexB]), updateArray(indexB, array[indexA]))(array);

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