Open your code edtitor and try the examples yourself.Here's how you can get more out of this content. Most of the examples out there use a simple array of numbers or strings, but the reality is that we normally work with complex objects which is rarely covered.
It takes messing about with it a couple of times to really understand how it works and use it with confidence. If you have ever struggled to understand the. Link for all code snippets used in this guide Grouping objects by key (Similar to SQL GROUP BY or C#'s.Removing duplicate objects from the array.Creating an array of unique categories for a restaurant menu.Calculating the total items and price for a e-commerce shopping cart.
