Meaning of caddr | Babel Free

Definitions

Car of the cdr of the cdr in Lisp. The third element in a list.

Examples

“Following the SEL in the control⟳ list are two elements (the cadr and caddr of the C list), both of which are themselves lists of instructions.”

“For example, in a procedure that manipulates a list data stream, we might know⟳ that the mode of the car of the list (that is the current message) is the same mode as the cadr (second message), caddr (third message), etc.”

“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.”

“In effect, lazy evaluation would force⟳ things to happen⟳ in the proper order⟳: The car of output is the first prompt. The cadr of output is the first square, a value that requires evaluation of the car of input. The caddr of output is the second prompt.”

CEFR level