Lists are a language feature.
A list or sequence is an abstract data type that represents a countable number of ordered values, where the same value may occur more than once
Languages with Lists include JavaScript, Python, Go, JSON, GraphQL, EDN, Ion
const list = [1,2,3]
myList = [1, 2, 3, 4, 5]
myList := []int{1, 2, 3}
[1, 2, 3]
null.list // A null list value
[] // An empty list value
[1, 2, 3] // List of three ints
[ 1 , two ] // List of an int and a symbol
[a , [b]] // Nested list
[ 1.2, ] // Trailing comma is legal in Ion (unlike JSON)
[ 1, , 2 ] // ERROR: missing element between commas