Limbo supports lists of arbitrary types as a basic construct.
Three lists are declared.
The len statement can be used on a list to return the number of elements in the respective list. Note that the list persons is a list of tuples whose pairing is that of a string and an integer.
The lists names and ages are both populated.
The :: operator functions on lists by prepending the given element before the head of the current list. Note the interaction between successive calls to the :: operator prior to assignment and how it affects order.
The list persons is built by making copies of the names and ages lists as n and a, respectively.
The hd statement returns the head of the list to its right.
The tl statement returns the tail, that is the list bar the head element, of the list to its right.
An empty list is equivocal to nil. That is, a nil list is an empty list.
Note: The effects upon temporary copies of names and ages do not affect the original lists they are copies of, as the temporary copies are copies, rather than references to the original lists.
; limbo lists.b
; lists
Lens: 0, 0, 0
Lens: 3, 3, 0
Persons:
Spike: 27
Jet: 36
Ed: 13
Tmp lens: 0, 0
Lens: 3, 3, 0
;
- Try reversing a list.
- Try interleaving two lists.