Develop a function {MapTuple T F} that returns a tuple that has the same width and label as the tuple T with its fields mapped by the function F. For example, local fun {Sq X} X*X end in {MapTuple a(1 2 3) Sq} end should return a(1 4 9). Hint: A tuple is constructed with {MakeTuple L N}, where L is the label and N is the width of the tuple.
Develop a function {MapTuple T F} that returns a tuple that has the same width and label as the tuple T with its fields mapped by the function F. For example, local fun {Sq X} X*X end in {MapTuple a(1 2 3) Sq} end should return a(1 4 9). Hint: A tuple is constructed with {MakeTuple L N}, where L is the label and N is the width of the tuple.
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
Problem 1PE
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Develop a function {MapTuple T F} that returns a tuple that has the same width and label as the tuple T with its fields mapped by the function F. For example,
local
fun {Sq X} X*X end
in
{MapTuple a(1 2 3) Sq}
end
should return a(1 4 9).
Hint: A tuple is constructed with {MakeTuple L N}, where L is the label and N is the width of the tuple.
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