Create a map from list kotlin

Make map kotlin

val map = mapOf(1 to "x", 2 to "y", -1 to "zz")

Create a map from list kotlin

fun main() {
    val numbers = listOf("one", "two", "three", "four")

    println(numbers.associateBy { it.first().toUpperCase() })
    println(numbers.associateBy(keySelector = { it.first().toUpperCase() }, valueTransform = { it.length }))
}

Similar codes

2 votes321 views1 answer
String builder kotlin
Kotlin
1 vote301 views1 answer
Kotlin set text from resource
Kotlin
1 vote322 views1 answer
Android long to duration string
Kotlin
2 votes348 views1 answer
Remove all items list
Kotlin
0 vote322 views1 answer
Kotlin element at index in string
Kotlin
1 vote322 views2 answers
Kotlin check if variable is initialized
Kotlin
2 votes302 views2 answers
How to throw exception in kotlin
Kotlin
0 vote308 views3 answers
Kotlin filter map by value
Kotlin
3 votes319 views1 answer
Kotlin read input as int
Kotlin
20 votes416 views4 answers
Kotlin loop
Kotlin