目录为什么需要 std::launder？std::launder 的定义与用法典型使用场景1. 处理 placement new 创建的新对象2. 处理虚函数表的更新3. 在类似 www.devze.comstd::optional 的场景中总结为什么需要 std::launder？
I\'ve been working on creating a form that submits content into my database but I decided that rather than using a drop down menu to select the date I\'d rather use a textfield. I was wondering what c
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