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Implement Buffer Parsers and Generic Map Class

Q: Implement Buffer Parsers and Generic Map Class

This question evaluates proficiency in low-level C++ buffer parsing, memory and pointer management, safe binary deserialization, and template-based generic container design with type-restricted map wrappers.

In C++, complete the following two independent implementation tasks.

Sequential buffer reader You are given a raw byte buffer and a current pointer or offset. Implement three functions that read the next value as char , int , and std::string respectively. After each successful read, the pointer must advance so that the next call continues from the correct location. Assume the binary encoding is:
- char : 1 byte
- int : 4 bytes
- std::string : a 4-byte length followed by that many bytes
Your functions should:
- verify that enough bytes remain before reading,
- safely convert the raw bytes into the requested type,
- advance the pointer or offset only on success,
- avoid unnecessary copying or allocations.
Generic map wrapper Implement a template class that can operate on either std::map<K, V> or std::unordered_map<K, V> , where both K and V are restricted to int or std::string . The class should:
- accept one of these containers in its constructor,
- support inserting key-value pairs,
- support querying a key and returning either the associated value or a clear not found result,
- output all stored entries in key:value format, one entry per line,
- handle empty containers correctly.
For std::unordered_map , any output order is acceptable. You may use template overloading or specialization if needed.

In C++, complete the following two independent implementation tasks.

Sequential buffer reader You are given a raw byte buffer and a current pointer or offset. Implement three functions that read the next value as char , int , and std::string respectively. After each successful read, the pointer must advance so that the next call continues from the correct location. Assume the binary encoding is:
- char : 1 byte
- int : 4 bytes
- std::string : a 4-byte length followed by that many bytes
Your functions should:
- verify that enough bytes remain before reading,
- safely convert the raw bytes into the requested type,
- advance the pointer or offset only on success,
- avoid unnecessary copying or allocations.
Generic map wrapper Implement a template class that can operate on either std::map<K, V> or std::unordered_map<K, V> , where both K and V are restricted to int or std::string . The class should:
- accept one of these containers in its constructor,
- support inserting key-value pairs,
- support querying a key and returning either the associated value or a clear not found result,
- output all stored entries in key:value format, one entry per line,
- handle empty containers correctly.
For std::unordered_map , any output order is acceptable. You may use template overloading or specialization if needed.

Implement Buffer Parsers and Generic Map Class

Quick Overview

Submit Your Answer to Earn 20XP

Implement Buffer Parsers and Generic Map Class

Quick Overview

Submit Your Answer to Earn 20XP