rvalue-reference

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Is it bad form to provide only a move constructor?

I would like to return a noncopyable object of type Foo from a function. This is basically a helper object which the caller will use to perform a set of actions, with a destructor to perform some clea[详细]

2023-01-14 20:38 分类：问答
Rvalue reference

While trying to understand Rvalue references from here, I am unable to understand two things If there are N strings in the vector, each copy could require as[详细]

2023-01-14 17:37 分类：问答
What are the main purposes of std::forward and which problems does it solve?

In perfect forwarding, std::forward is used to convert the named rvalue references t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function[详细]

2023-01-13 02:30 分类：问答
Do rvalue references allow implicit conversions?

Is the following code le开发者_如何学JAVAgal? std::string&& x = \"hello world\"; g++ 4.5.0 compiles this code without any problems.This is discussed on usenet currently. See Rvalue referenc[详细]

2023-01-04 16:33 分类：问答
min and perfect forwarding

The min algorithm is normally expressed like this: template <typename T> const T& min(const T& x, const T& y)[详细]

2023-01-04 04:15 分类：问答
How can I get this code involving unique_ptr to compile?

#include <vector> #include <memory> using namespace std; class A { public: A(): i(new int) {} A(A const& a) = delete;[详细]

2022-12-28 05:37 分类：问答
Problem with "moveable-only types" in VC++ 2010

I recently installed Visual Studio 2010 Professional RC to try it out and test the few C++0x features that are implemented in VC++ 2010.[详细]

2022-12-27 11:18 分类：问答
Some clarification on rvalue references

First: where are std::move and std::forward defined?I know what they do, but I can\'t find proof that any standard header is required to include them.In gcc44 sometimes std::move is available, and som[详细]

2022-12-25 21:48 分类：问答
non-class rvalues always have cv-unqualified types

§3.10 section 9 says \"non-class rvalues always have cv-unqualified types\". That made me wonder... int foo()[详细]

2022-12-18 09:20 分类：问答
C++ "move from" container

In C++11, we can get an efficiency boost by using std::move when we want to move (destructively copy) values into a container:[详细]

2022-12-18 00:02 分类：问答