/Kotlin/Java.lang.UnsupportedOperationException when i try to set value in Muttablelist kotlin

Java.lang.UnsupportedOperationException when i try to set value in Muttablelist kotlin

You can fix this by calling toMutableList() api 
rather than using smart cast (as).

fun main(){
    val x : List<String> = listOf("foo", "bar", "baz")
    //val y: MutableList<String> = x as MutableList<String> throws UnsupportedOperationException
    val y: MutableList<String> = x.toMutableList()
    y.add("sha")
    println(y) // [foo, bar, baz, sha]
}

Source: grepper.com

Similar codes

1 vote156 views1 answer
File google-services.json is missing. the google services plugin cannot function without it. android
Kotlin
1 vote135 views1 answer
Kotlin set environment variable
Kotlin
0 vote149 views1 answer
Viewmodelfactory kotlin
Kotlin
4 votes161 views3 answers
How to set layout params in android programmatically
Kotlin
5 votes154 views2 answers
Generate a random string kotlin
Kotlin
0 vote168 views1 answer
Kotlin flatmap
Kotlin
3 votes122 views1 answer
Send email with intent
Kotlin
1 vote132 views1 answer
Date format kotlin
Kotlin
0 vote156 views1 answer
Kotlin lateinit
Kotlin
0 vote143 views1 answer
Kotlin fold
Kotlin