List Basics
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List Basics
A Scala List is an immutable, singly-linked sequence, created with List(1, 2, 3). Being immutable, operations like adding an element return a *new* list rather than modifying the original. :: ("cons") prepends an element to the front of a list efficiently, and Nil represents the empty list.
Note: 1 :: 2 :: 3 :: Nil is an equivalent, more explicit way to construct List(1, 2, 3) using cons.
Example: List Basics
object Main extends App {
val numbers = List(1, 2, 3, 4)
val withZero = 0 :: numbers
println(numbers)
println(withZero)
println(numbers.length)
}Login to try C/C++/Java/PHP code in the editor
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