When to Use std::variant
Understand when to apply std::variant in C++17 as a type-safe alternative to unions for handling multiple types. Explore use cases like parsing, error management, finite state machines, and polymorphism without inheritance.
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Unless you’re doing some low-level stuff, possibly only with simple types, then unions might be a
valid option [^noteGuide]. But for all other uses cases, where you need alternative types, std::variant is the
way to go.
[^noteGuide]: See ...