Kotlin list map to another list

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 }))
}

Kotlin list map to another list

12,12,344,5

Similar codes

0 vote300 views0 answer
Kotlin
0 vote331 views1 answer
Intellij plugin get current selection
Kotlin
1 vote310 views1 answer
Install kotlin
Kotlin
4 votes318 views1 answer
Kotlin for android development
Kotlin
0 vote312 views2 answers
Time text format kotlin android studio
Kotlin
0 vote321 views1 answer
How to open cmaera in kotlin
Kotlin
2 votes328 views1 answer
Android garbage collection
Kotlin
2 votes319 views3 answers
Could not parse the Android Application Module's Gradle config. Resolve gradle build issues and/or resync
Kotlin
2 votes301 views1 answer
Kotlin collections
Kotlin
0 vote314 views1 answer
How to make dialog transparent android
Kotlin