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CONS

   Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Idioms, Wikipedia, Hutchinson 0.04 sec.
1.CONS - connection-oriented network service
2.cons - /konz/ or /kons/ [LISP, "construct"] A Lisp function which takes an element H and a list T and returns a new list whose head is H and whose tail is T.

In Lisp, "cons" is the most fundamental operation for building structures. It actually takes any two objects and returns a "dotted-pair" or two-branched tree with one object hanging from each branch. Because the result of a cons is an object, it can be used to build binary trees of any shape and complexity.


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He read many wise things in books, but he could only judge from his own experience (he did not know whether he was different from other people); he did not calculate the pros and cons of an action, the benefits which must befall him if he did it, the harm which might result from the omission; but his whole being was urged on irresistibly.
Of Human Bondage by Maugham, W. Somerset View in context
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