Kotlin provides several ways to clone a list. Cloning a list means creating a new list with the same elements as the original list. The new list should be independent of the original list, so any changes made to the new list should not affect the original list, and vice versa. Here are some ways to clone a list in Kotlin.
Using the toList() method: The toList() method is used to create a new list from an existing list. The toList() method creates a shallow copy of the list, which means that it only copies the references to the elements in the list, not the elements themselves.
1val originalList = listOf(1, 2, 3)
2val clonedList = originalList.toList()
Using the copyOf() method: The copyOf() method is used to create a new list with the same elements as the original list. The copyOf() method creates a shallow copy of the list, which means that it only copies the references to the elements in the list, not the elements themselves.
1val originalList = listOf(1, 2, 3)
2val clonedList = originalList.copyOf()
Using the map() method: The map() method is used to create a new list from an existing list by applying a transformation function to each element of the original list. To clone a list, we can use the map() method with the identity function, which returns its input.
1val originalList = listOf(1, 2, 3)
2val clonedList = originalList.map { it }
Using the toMutableList() method: The toMutableList() method is used to create a new mutable list from an existing list. The toMutableList() method creates a shallow copy of the list, which means that it only copies the references to the elements in the list, not the elements themselves.
1val originalList = listOf(1, 2, 3)
2val clonedList = originalList.toMutableList()
Using the ArrayList constructor: The ArrayList constructor is used to create a new mutable list from an existing list. The ArrayList constructor creates a shallow copy of the list, which means that it only copies the references to the elements in the list, not the elements themselves.
1val originalList = listOf(1, 2, 3)
2val clonedList = ArrayList(originalList)
In conclusion, there are several ways to clone a list in Kotlin, including using the toList(), copyOf(), map(), toMutableList(), and ArrayList constructor methods. When cloning a list, it is important to keep in mind that the methods create a shallow copy of the list, which only copies the references to the elements in the list, not the elements themselves.