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Mission Impossible / How to create datatypes which cannot contain invalid state

adrianimboden
2,837 views
01 Introduction
Introduction
02 Enums
Enums - Overview Enums - Hands On Enums - Example Solution
03 Optional
Optional - Overview Optional - Hands On Optional - Example Solution
04 Variant
Variant - Overview Variant - Hands On Variant - Example Solution
05 Final
Final - Hands On Final - Example Solution
Previous: Optional - Hands On Next: Variant - Overview
Possible solution
#include <cstdint>
#include <iostream>
#include <optional>
struct QualityGoal {
int32_t quality_reference;
int32_t maximal_difference;
};
class ProductProducer {
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