The map data structure provides a way to associate a key with a value, which is useful for organizing and retrieving data.Finally, we check if the map contains the key “Mary” using the containsKey() function and print the result to the console. We then retrieve the value associated with the key “John” using the square bracket notation and store it in the variable johnAge. In this example, we create a new read-only map of strings using the mapOf() function with the key-value pairs “John” to 25, “Mary” to 30, and “Bob” to 20. ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.DevOps Engineering - Planning to Production.

Python Backend Development with Django(Live).Android App Development with Kotlin(Live).Full Stack Development with React & Node JS(Live).Java Programming - Beginner to Advanced.Data Structure & Algorithm-Self Paced(C++/JAVA).Data Structure & Algorithm Classes (Live).This example shows how even complex operations can be performed easily with Kotlin’s powerful APIs. We’re making use of the with scope function here to keep our code tidy. Val shipments = mapOf('Chocolate' to 3, 'Strawberry' to 7, 'Rocky Road' to 5) We’ll subtract all the entries in the sales map and then add all the entries from the shipments map to update each flavor’s Quantity: val sales = mapOf('Vanilla' to 7, 'Chocolate' to 4, 'Strawberry' to 5) After a day of receiving shipments and selling ice cream, we need to update our store’s inventory map. The forEach method performs an action on each entry in a given map. As a final example, we’ll use what we’ve learned already and introduce the forEach method.

Mapof kotlin example