Kotlin Map To Set

In contrast, this isn’t the case. It will return a new list with elements transformed from entries in original map. The map’s entries properties return a set of all key/value pairs in the map.

Use these functions to create maps in kotlin: Kotlinhashmap.kt package com.zetcode fun main () { val items = hashmap<string, int> () items [a] = 90 items [b] = 80 items [c] = 70 for ( (k, v) in items) { println ($k = $v) } } the example creates a map using java's hashmap and prints the values and pairs to the console. Maps are not part of collection but built based on the collection concepts in kotlin, but map is built using collections like set is used for keys and list is used for value.

Kotlin map interface example 1 let's create an example of declaring and traversing the value of map using mapof<k,v> () function.

Val mapwithvalues = mapof ( key1 to value1, key2 to value2, key3 to value3) note that we don’t need to specify the type explicitly here. In kotlin, you can easily get a list contained in this map by calling the tolist () function on the map instance. I'm not sure the default is wrong. In this tutorial we will discuss about kotlin map.