Home >Backend Development >C++ >Here are some English Q&A titles that match the content of your article: * Why Is std::make_unique Better Than Using `new` to Initialize `std::unique_ptr`? * What are the Advantages of Using `std::make_unique` for `std::unique_ptr` Initialization? *

Here are some English Q&A titles that match the content of your article: * Why Is std::make_unique Better Than Using `new` to Initialize `std::unique_ptr`? * What are the Advantages of Using `std::make_unique` for `std::unique_ptr` Initialization? *

Barbara Streisand
Barbara StreisandOriginal
2024-10-28 18:30:02747browse

以下是一些符合您文章内容的英文问答类标题:

* Why Is std::make_unique Better Than Using `new` to Initialize `std::unique_ptr`?
* What are the Advantages of Using `std::make_unique` for `std::unique_ptr` Initialization?
* When Should You Use `std::make_unique` to Create `std::

Advantages of std::make_unique

Using std::make_unique to initialize std::unique_ptr has the following advantages:

Readability enhancement

  • std::make_unique directly indicates that you intend to create a smart pointer, while new implies the creation of a raw pointer.

Type Safety

  • std::make_unique enforces type safety, it automatically creates the correct std::unique_ptr based on the template type argument Example.

Exception Safety

  • std::make_unique is exception safe, it will automatically free the allocated memory if the constructor throws an exception.

Efficiency

  • std::make_unique is generally more efficient than using new because it avoids extra function calls and memory allocation operations.

Prevent memory leaks

  • std::make_unique can prevent memory leaks because it automatically frees allocated memory even when the function throws an exception case.

Better than new

  • In general, using std::make_unique is better than using new to create smart pointers . Here are some situations where std::make_unique is recommended:

    • When you need to create a simple std::unique_ptr instance.
    • When you need to ensure exception safety.
    • When you want to be more efficient.

Case in which std::make_unique is not suitable

  • When you need to use a custom destructor, Don't use std::make_unique.
  • Also do not use std::make_unique when you need to take a smart pointer from a raw pointer.

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