Lesson 4 - Dictionaries and sets in Kotlin
In the previous lesson, Multidimensional arrays in Kotlin, we took a little detour to multidimensional arrays. Today's Kotlin tutorial is about dictionaries and sets.
The idea of the dictionary is that we often need to access an element using a key. This concept works the same as with arrays where the keys (indexes) are numeric. The dictionary allows us to index using any data type, e.g. a string. We then access the elements of the collection using these strings. An analogy can be found in a real paper dictionary where we have each string word associated with the translation, explanation, other meanings, etc.
The data in this collection is stored in a special way known as hashing. This approach allows us to
...End of the preview...
You've come here and that's great! We believe that the first lessons showed you something new and useful
Do you want to continue the course? Go to the premium section.
Buy just this lesson
- Unlimited and permanent access to individual lessons.
- High quality IT knowledge.
- Skills to help you get your dream and well-paid job.
Requested article covers this content:
In this Kotlin tutorial, we'll discuss dictionaries and sets, describe the Set and Map interfaces and test the new collections on examples.
You gain credits by supporting our network. This is done by sending a helpful amount of money to support the site, or by creating content for the network.