Functional Way To Iterate Over Range Es6 7 Duplicate

One powerful feature that ES6 introduces is the ability to iterate over ranges more efficiently and with cleaner code. If you're looking to iterate over a range in ES6, you're in luck! The functional programming style in ES6 makes it easy to work with ranges and duplicate elements smoothly.

Using the `Array.from()` Method:
One way to iterate over a range in ES6 is by utilizing the `Array.from()` method. This method allows you to create an array-like object from an iterable object.

Here's an example of how you can iterate over a range and duplicate elements using the `Array.from()` method:

const range = (start, end) => Array.from({ length: end - start + 1 }, (_, index) => index + start).flatMap(element => [element, element]);
const result = range(2, 7);
console.log(result);

In the above code snippet, we define a `range` function that takes a start and end value. We then use `Array.from()` to create an array with the specified range of values and duplicate each element using the `flatMap()` method.

Using the `Array.prototype.flatMap()` Method:
The `flatMap()` method allows you to map each element of an array to a new array and flatten the result into a single array.

Here's an example of how you can utilize `flatMap()` to iterate over a range and duplicate elements:

const range = (start, end) => Array.from({ length: end - start + 1 }, (_, index) => index + start).flatMap(element => [element, element]);
const result = range(5, 10);
console.log(result);

In the code above, the `range` function generates a range of values and then uses `flatMap()` to duplicate each element in the array. This results in a new array with each element duplicated.

Benefits of Functional Programming:
Functional programming in ES6 provides a more concise and readable way to work with ranges and duplicate elements. By utilizing functions like `Array.from()` and `flatMap()`, you can write clean and efficient code that is easier to maintain and understand.

So, the next time you need to iterate over a range in ES6 and duplicate elements, remember to leverage the power of functional programming techniques. These methods make your code more elegant and expressive, leading to better software engineering practices and improved code quality. Happy coding!