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Lodash _.forOwnRight


The lodash _.forOwnRight method is a convenient utility function for iterating over own enumerable properties of an object from right to left. It is part of the Lodash JavaScript library that provides a set of useful tools for manipulating and traversing data structures in JavaScript.

The method takes two arguments: an object and an iteratee function. The iteratee function is invoked with two arguments: the value and key of each property found in the object.

Unlike traditional loops, _.forOwnRight iterates over the object properties in reverse order, starting from the last property and moving towards the first one. This can be particularly useful when dealing with objects that have a specific order.

One practical example of using _.forOwnRight is when you want to reverse the order of an object's properties. You can use _.forOwnRight to iterate over the properties from right to left and then reassign the properties in the reverse order to a new object.

Here is an example code block that demonstrates how to use _.forOwnRight to reverse the properties of an object:

const obj = {
  name: "John",
  age: 30,
  occupation: "Developer"

const reversedObj = {};

_.forOwnRight(obj, (value, key) => {
  reversedObj[key] = value;

// Output: { occupation: 'Developer', age: 30, name: 'John' }

In this example, we create an object called obj with three properties. We then create an empty object called reversedObj that we will populate with the properties of obj in reverse order.

We pass obj and an iteratee function to _.forOwnRight. The iteratee function takes the value and key of each property and assigns them to reversedObj, but in reverse order.

After the iteration is complete, reversedObj contains the same properties as obj, but in reverse order.

Overall, the lodash _.forOwnRight method is a powerful utility that provides a straightforward way to iterate over object properties from right to left. It can simplify code and make certain data structure manipulations quicker and more efficient.