Fix error #144
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Fix error #144
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changkun
reviewed
Nov 17, 2020
| @@ -175,7 +175,7 @@ int main() { | |||
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| 在上图中，最后一步只剩下 B，而 B 并没有任何智能指针引用它，因此这块内存资源也会被释放。 | |||
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| `std::weak_ptr` 没有 `*` 运算符和 `->` 运算符，所以不能够对资源进行操作，它的唯一作用就是用于检查 `std::shared_ptr` 是否存在，其 `expired()` 方法能在资源未被释放时，会返回 `true`，否则返回 `false`。 | |||
| `std::weak_ptr` 没有 `*` 运算符和 `->` 运算符，所以不能够对资源进行操作，它的唯一作用就是用于检查 `std::shared_ptr` 是否存在，其 `expired()` 方法能在资源未被释放时，会返回 `false`，否则返回 `true`。 | |||
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Could you please maybe also fix the error in book/en-us/05-pointers.md?
Fix error, while the resource of `std::shared_ptr` exists, `std::weak_ptr`'s `expired()` method returns `false`, otherwise it returns `true`.
changkun
approved these changes
Nov 17, 2020
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Description
Fix error, while the resource of
std::shared_ptrexists, theexpired()method ofstd::weak_ptrreturnsfalse, otherwise returnstrue.Change List
expired()return valueReference
https://en.cppreference.com/w/cpp/memory/weak_ptr/expired
说明
修复错误，
std::shared_ptr资源尚存在时，std::weak_ptr的expired()方法返回false, 否则返回true。变化箱单
std::weak_ptr的expired()方法返回值错误参考文献
https://en.cppreference.com/w/cpp/memory/weak_ptr/expired