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

1 vote230 views1 answer
Kotlin coroutine builders
Kotlin
-3 votes243 views2 answers
How to call a function after delay in kotlin android
Kotlin
0 vote239 views1 answer
String to date kotlin
Kotlin
1 vote239 views1 answer
Get minute from milliseconds programmatically
Kotlin
0 vote223 views1 answer
Android studio add line at end of class
Kotlin
1 vote216 views1 answer
Kotlin class
Kotlin
1 vote231 views1 answer
Jetpack compose get context
Kotlin
2 votes218 views1 answer
String builder kotlin
Kotlin
2 votes221 views1 answer
Android studio export jar
Kotlin
0 vote213 views1 answer
Kotlin long max value
Kotlin