a.  Without using any other library functions or operators, show how the meaning of the following pattern matching definition for logical conjunction "&&" can be expressed using conditional (if/else) expressions:   True && True = True   _    && _    = False Hint: use two nested conditional expressions.

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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a.  Without using any other library functions or
operators, show how the meaning of the following pattern matching
definition for logical conjunction "&&" can be expressed using
conditional (if/else) expressions:

  True && True = True
  _    && _    = False

Hint: use two nested conditional expressions.

b. Do the same for the following alternative definition:

  True  && b = b
  False && _ = False

Hint: note the difference in the number of conditional expressions
that are required this time (fewer are be needed).

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