![]() You also know way to iterate over a HashMap, filter or transform a HashMap. Now you can create, initialize a HashMap, add, update and remove items from a HashMap. In this Kotlin tutorial, we’ve learned some important points of HashMap. The example show you way to initialize a HashMap using hashMapOf() function: var bzkMap: HashMap = hashMapOf("zero" to 0, "onek" to 1000, "twok" to 2000, "bezkoder" to 9999) which will involve rehashing each element into a new bucket. If you want to create a new HashMap that allows null values and null keys, just use the question mark ? right after the types. As the name implies, this is an implementation of the Map interface that is thread-safe. ![]() It takes a lambda that you can use to do something with each entry in the. We can create a new HashMap using constructor. The forEach() function is almost identical to the one found on List and Set objects.
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