在C++中,std::unique_ptr 不支持拷贝构造函数和拷贝赋值操作符,因此会出现“use of deleted function ‘std::unique_ptr<_tp, _dp>::unique_ptr(const std::unique_ptr<_tp, _dp>&)’”的错误。 std::unique_ptr 是一种独占所有权的智能指针,这意味着在任何时候,只有一个 std::unique_ptr 实例可以拥...
Use of deleted function unique_ptr::unique_ptr Sep 18, 2013 at 1:49am ThemePark (28) I have the following header and class file in a project: 123456789101112131415161718 #ifndef PATTERN_HPP_ #define PATTERN_HPP_ #include <memory> #include <list> using namespace std; namespace pub { ...
#include<memory>#include<iostream>//用于测试错误的类classTestClass{public:intvalue_=0;};//用来测试传入unique_ptr的函数voidtestPtrFunction(std::unique_ptr<TestClass>ptrHandle){//输出指针里面的内容std::cout<<ptrHandle->value_<<std::endl;}intmain(){//新建一个智能指针std::unique_ptr<TestClas...
问题分析:在倒数第3行,testPtrFunction(testPtr)会发生题目中的error原因分析:unique_ptr指向的内存区域只能由一个unique_ptr的对象来指定。把testPtr作为传入参数的时候,就会发现有两个unique_ptr同时指向一个内存区域,实际参数testPtr和形式参数ptrHandle。修改...
问为什么我收到编译错误"use of deleted 'std::unique_ptr ...“ENvs低版本转高版本，std::getline...
unique_ptr<Qux, std::default_delete<Qux> >)>}]’ main.cpp:49:18: required from here /home/me/.conan/data/fruit/3.6.0/_/_/package/99fe6edc64c98b6ead2c33cb2b0bf89b59d7f7ce/include/fruit/impl/component_functors.defn.h:405:58: error: use of deleted function ‘std::unique_ptr<_...
The latest version of this topic can be found atHow to: Create and Use unique_ptr Instances. Aunique_ptrdoes not share its pointer. It cannot be copied to anotherunique_ptr, passed by value to a function, or used in any Standard Template Library (STL) algorithm that requires copies to ...
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std::unique_lock lock(mutex_); auto iterator = registry_.find(surfaceId); if (iterator == registry_.end()) { @@ -39,7 +39,7 @@ std::unique_ptr<ShadowTree> ShadowTreeRegistry::remove( bool ShadowTreeRegistry::visit( SurfaceId surfaceId, std::function<void(const ShadowTree &shadowTr...
Like theunique_ptr, shared_ptr is also defined in the <memory> header in the C++ Standard Library. Because it follows the concept ofshared ownership, after initializing a shared_ptr you can copy it, assign it or pass it by value in function arguments. All the instances point to the same...