std::experimental:: erased_type
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定义于头文件
<experimental/utility>
|
||
|
struct
erased_type
{
}
;
|
(库基础技术规范)
(于库基础技术规范 v3 中移除) |
|
类
erased_type
是一个空结构体，在运行时确定实际类型的场景中作为类型占位符使用。例如，在使用
类型擦除分配器
的类中，嵌套类型定义
allocator_type
是
erased_type
的别名。
注释
erased_type
已在 LFTS v3 中移除，因为
std::
pmr
::
polymorphic_allocator
<>
更适合用于类型擦除。