Programming Languages Pragmatics, 4th Edition 9.2 Consider the following code in C++.class string_map {string cached_key;string cached_val;const string complex_lookup(const string key);// body specified elsewherepublic:const string operator [] (const string key) {if (key == cached_key) return cached_val;string rtn_valcached_keycomplex_lookup (key);key;%3Dcached_valrtn_val;%3Dreturn rtn_val;};Suppose that string_map::operator[] contains the only call to complex_lookupanywhere in the program. Explain why it would be unwise for the programmerto expand that call textually in-line and eliminate the separate function.

The given code segment would likely be part of a header file, which would be included by files that…

Consider the following code in C++. class string_map { string cached_key; string cached_val; const string complex_lookup(const string key); // body specified elsewhere public: const string operator [] (const string key) { if (key == cached_key) return cached_val; string rtn_val = complex_lookup (key); cached_key = key; cached_val !! %3D rtn_val; %3D return rtn_val; }; Suppose that string_map::operator[] contains the only call to complex_lookup anywhere in the program. Explain why it would be unwise for the programmer to expand that call textually in-line and eliminate the separate function.

Consider the following code in C++. class string_map { string cached_key; string cached_val; const string complex_lookup(const string key); // body specified elsewhere public: const string operator [] (const string key) { if (key == cached_key) return cached_val; string rtn_val = complex_lookup (key); cached_key = key; cached_val !! %3D rtn_val; %3D return rtn_val; }; Suppose that string_map::operator[] contains the only call to complex_lookup anywhere in the program. Explain why it would be unwise for the programmer to expand that call textually in-line and eliminate the separate function.

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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