Recently, I enrolled in an online Angular course and discovered that RxJS plays a significant role in web development. While exploring different concepts, I encountered a nested map operator that intrigued me. Although I can somewhat decipher what is happening, my search for detailed information on this topic has been fruitless.
this.productService.getProducts().pipe(
map(products =>
products.map(product => {
const data = {...product.payload.val() as Product};
return data;
}))).subscribe(p => this.products = p)
As far as my understanding goes, the getProducts() function returns a list of Observables. The outer map operator then passes each individual Observable to the inner map operator, enabling me to extract the payload data from the HTTP response. However, I can't help but wonder if there is a simpler or more elegant way to achieve this functionality.