What do we mean by Reduce?
Reduce is a new function that comes with ES2015, which allows you to use a for-of loop instead of the traditional for loop. Reduce is often used in the background, and here are some of the most common use cases for Reduce:
- Make a pipeline
In this article, we’ll be exploring how to write a small set of code that will be used to create a simple data pipeline. The purpose of the pipeline is to allow us to use a single string of data through several different restful services. Essentially, this is a simple example of what we can do with redux and the Reduce () function.
- Summarize the elements of an array
- Compress an array
- Searching the integer that emerges in strange times
The problem statement is to find an integer between 1 and 10 that appears odd times in a list of integers generated by this code: var n = 10, numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
- Acquire an object from an array
The Reduce() method is a handy (sometimes necessary) way to iterate through an array and grab the corresponding index value at each iteration. If used well, it can save a lot of code and can eliminate a lot of the confusion that surrounds arrays. But what if you want to fetch an entire array at once? You could have a bunch of if statements and code to do that, but let’s not do that. Instead, let’s use the “slice” operator.
- Searching for the greatest subarray some of a given array