Cdr
Cdr (/ˈkʌdər/ or /ˈkʊdər/) is primitive operation on cons cells (or "non-atomic S-expressions") introduced in the Lisp programming language.
Cons
The fundamental operation for constructing data in LISP
Others
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As a practical matter a cons is simpler than a list so you can get the value with a straight cdr rather than the conceptually more complex cadr the car of the cdr from question What is this emacs configuration doing? |
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In this case cdr would not be part of tree structure;note that while the car 1b component of each such cons is part of the from question Definition of tree structure in Lisp |
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Thus a chain of pairs where the last cdr is not matches this;append is a procedure that uses cons to make a list with all the elements of the argument lists left to right from question Can someone explain the difference between Cons and Append in scheme? |