RemoveAt not found in list kotlin?

user_2569793 0
Viewed 916

I have a list whose value is filled from API

var dataList: List<Data?>? = null

I need to remove the element from 0th index

while in java I could use 

dataList.removeAt(0)

But I don't see the function in kotlin

kotlin list
3 Answers

List supports only read-only access while MutableList supports adding and removing elements.

so var dataList: MutableList<Data?>? = null will give you the option to remove an element.

user_115559030

This is because unlike java List is immutable in Kotlin. That means you can't modify after declaring it. To get functionalities like add,remove you can declare a mutable list in Kotlin like this: 

val mutableList = mutableListOf<String>()
mutableList.add("Some data")
mutableList.removeAt(0)
user_85210940

You can't remove an item from a List. Nor can you add an item, nor change one. That's because List is a read-only interface!

If the list is mutable, you could instead have a MutableList reference to it. MutableList is a subinterface that adds all the methods for adding, changing, and removing items.

user_101342090
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