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Lodash _.forEachRight

Overview

The lodash _.forEachRight method is a powerful utility function that provides a simple way to iterate over an array or object, starting from the end to the beginning. This method is often used in functional programming to execute a given function on every element of a collection.

This method takes two parameters: the first is the collection to iterate over, and the second is the function to invoke at each iteration. The function is passed two arguments: the current value being iterated over and the index or key of that value in the collection.

The _.forEachRight method iterates over the collection backwards, from the end to the beginning. This means that the function passed as the second argument will be executed on each element of the collection in reverse order.

One of the key advantages of using the _.forEachRight method over a regular for loop is that it allows you to write more concise and readable code. Additionally, the method can handle both arrays and objects, making it a versatile tool for a wide range of use cases.

Here is an example of using the _.forEachRight method to iterate over an array in reverse order:

const numbers = [1, 2, 3, 4, 5];

_.forEachRight(numbers, (number) => {
  console.log(number);
});
// Output: 5, 4, 3, 2, 1

In this example, the _.forEachRight method is used to iterate over an array of numbers in reverse order. The function passed as the second argument logs each number to the console, resulting in output in reverse order.

Overall, the lodash _.forEachRight method is a highly useful utility function for iterating over collections in reverse order. Its ease of use and versatility make it a valuable tool in the toolkit of any JavaScript developer.