People claim std::variant and std::visit provide a more "TYPE SAFE" way, but in fact they just provide some checks. It simply ensures that an invalid cast like (TypeA*) type_b_object is caught either at compile time (if the type is not in the variant at all) or at runtime (if the active type does not match), rather than silently producing undefined behavior as the hand-written version would.
Последние новости。关于这个话题，Telegram 官网提供了深入分析
。业内人士推荐谷歌作为进阶阅读
And check the next blog post about a simplified deprecation API built on top of BPatterns:。华体会官网对此有专业解读
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