Mastering Immutable.js

Getting values using find()

The find() method lets you to search for a specific value in a collection. It works a lot like the filter() method, with two important differences:

• It doesn't return a new collection with the filtered results; it returns the value of what it finds
• It stops searching for values as soon as a match is found

The find() method takes the same callback function as the filter() method. You can find list values as follows:

const myList = List.of(1, 2, 3);const myFoundListItem = myList.find(v => v === 3);const myNotFoundListItem = myList.find(v => v === 4);console.log('myFoundListItem', myFoundListItem);// -> myFoundListItem 3console.log('myNotFoundListItem', myNotFoundListItem);// -> myNotFoundListItem undefined

You can ...