Description
There are three types of lists that can be entered directly from the keyboard, as follows.
i1 : {a,b,c}
o1 = {a, b, c}
o1 : List
|
i2 : [a,b,c]
o2 = [a, b, c]
o2 : Array
|
i3 : (a,b,c)
o3 = (a, b, c)
o3 : Sequence
|
We introduce the class of visible lists as a convenience for referring to lists of these types.