What is the reduce function in functional programming?

What is the reduce function in functional programming?

The reduce function is a higher-order function that processes a list of items and reduces it to a single value by applying a function.

Can you give me an example of how reduce works?

Sure! For instance, in JavaScript, you can use reduce to sum an array of numbers: array.reduce((acc, curr) => acc + curr, 0);.

What are some common use cases for reduce?

Common use cases include summing values, flattening arrays, and counting occurrences of items.

How does reduce differ from map and filter?

While map transforms each element and filter selects elements based on a condition, reduce aggregates values into a single result.