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Infko 2019-03-27 19:37:58 +08:00 committed by GitHub
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@ -973,16 +973,16 @@ int main()
#### 定位 new #### 定位 new
定位 new（placement new）允许我们向 new 传递额外的参数。 定位 new（placement new）允许我们向 new 传递额外的地址参数，从而在预先指定的内存区域创建对象。
```cpp ```cpp
new (palce_address) type new (place_address) type
new (palce_address) type (initializers) new (place_address) type (initializers)
new (palce_address) type [size] new (place_address) type [size]
new (palce_address) type [size] { braced initializer list } new (place_address) type [size] { braced initializer list }
``` ```
* `palce_address` 是个指针 * `place_address` 是个指针
* `initializers` 提供一个（可能为空的）以逗号分隔的初始值列表 * `initializers` 提供一个（可能为空的）以逗号分隔的初始值列表
### delete this 合法吗？ ### delete this 合法吗？