cons (a, b) constructs a pair, and car(pair) and cdr(pair) returns the first and last element of that pair. For example, car(cons(3, 4)) returns 3 , and cdr(cons(3, 4)) returns 4. Given this implementation of cons: def cons(a, b): def pair(f): return f(a, b) return pair Implement car and cdr.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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In c++ please
cons(a, b) constructs a pair,
and car(pair) and
cdr(pair) returns the first
and last element of that pair. For
example, car(cons(3, 4))
returns 3 , and
cdr(cons(3, 4)) returns
4.
Given this implementation of
cons:
def cons(a, b):
def pair(f):
return f(a, b)
return pair
Implement car and cdr
Transcribed Image Text:cons(a, b) constructs a pair, and car(pair) and cdr(pair) returns the first and last element of that pair. For example, car(cons(3, 4)) returns 3 , and cdr(cons(3, 4)) returns 4. Given this implementation of cons: def cons(a, b): def pair(f): return f(a, b) return pair Implement car and cdr
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