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1 definition found
 for cons
From The Jargon File (version 4.4.7, 29 Dec 2003) :

  cons
   /konz/, /kons/
  
      [from LISP]
  
      1. vt. To add a new element to a specified list, esp. at the top. ?OK, cons
      picking a replacement for the console TTY onto the agenda.?
  
      2. cons up: vt. To synthesize from smaller pieces: ?to cons up an example?.
  
      In LISP itself, cons is the most fundamental operation for building
      structures. It takes any two objects and returns a dot-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. Hackers think of it as a sort of universal constructor, and
      that is where the jargon meanings spring from.
  

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