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KOTLIN - COPY FROM LIST

How to copy one List to the other?

There are two ways by which we can copy one List to the other.

Using the method 'toList()'

Using the method 'toMutableList()'

Let us look at the first way using the 'toList()' method.

Example :

fun main() {
    val x = mutableListOf("Mohan", "Kriti", "Salim")
    var y = x.toList()
    println("The Copied List is "+y)
}

Output :

The Copied List is [Mohan, Kriti, Salim]

So, in the above code we have created a 'List' and initialised to the variable 'x'.

val x = mutableListOf("Mohan", "Kriti", "Salim")

Below is how the values are positioned in the List,

Then we have used the 'toList()' method and create a new List that would be the exact copy of 'x'.

Then assign it to 'y'.

var y = x.toList()

And we get the below output,

The Copied List is [Mohan, Kriti, Salim]

The 'toMutableList()' is exactly same as 'toList()' method. Just that 'toMutableList()' creates a list that can be changed.

Note : Do not use the '=' operator to copy a List to the other(i.e. If there are two Lists 'x' and 'y'. Do not use y = x). Because in that case any changes made to the List 'x' will be reflected in the copied List 'y'.

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