Cons vs Caddr - What's the difference?
cons | caddr | Related terms |
(computing) A data structure in LISP that is a pair of pointers, car and cdr, used mainly for lists.
(computing) To obtain a list from a cons or a nesting of conses; to prepend an element to a list by forming a cons of that element and the list; to obtain a list from a smaller one by repeated application of such kind of prepending.
(con)
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(computing) Car of the cdr of the cdr in LISP. The third element in a list.
* Matt Kaufmann, Panagiotis Manolios, and J Strother Moore, Computer-aided reasoning: an approach , 2000 :
Cons is a related term of caddr.
In computing|lang=en terms the difference between cons and caddr
is that cons is (computing) to obtain a list from a cons or a nesting of conses; to prepend an element to a list by forming a cons of that element and the list; to obtain a list from a smaller one by repeated application of such kind of prepending while caddr is (computing) car of the cdr of the cdr in lisp the third element in a list.As nouns the difference between cons and caddr
is that cons is or cons can be (computing) a data structure in lisp that is a pair of pointers, car and cdr, used mainly for lists while caddr is (computing) car of the cdr of the cdr in lisp the third element in a list.As a verb cons
is (computing) to obtain a list from a cons or a nesting of conses; to prepend an element to a list by forming a cons of that element and the list; to obtain a list from a smaller one by repeated application of such kind of prepending or cons can be (con).cons
English
Etymology 1
Noun
(head)Etymology 2
Abbreviation of construct .Noun
(conses)Synonyms
* cons cellVerb
(es)- In addition to specifying the whole list at once using square brackets and commas, you can build them up piece by piece using the (:) operator. This process is often referred to as consing.
Etymology 3
Verb
(head)caddr
English
Noun
(en noun)- If we let x denote the tree (1 2 3), then the car of x is 1, the cdr of x is (2 3), the cadr of x is 2, the caddr of x is 3, and the cdddr of x is nil.
