Recent questions tagged c++11

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I am trying to create a simple comunication between 2 processes in C++ ( Windows ) like FIFO in linux. This is my ... i fixed it to like FIFO ? See Question&Answers more detail:os...

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c++11 - Are notes and examples in the core language specification of the C++ Standard non-normative?

Often on SO (and elsewhere) I have seen the claim that notes and examples in the C++ Standard are not ... non-normative? How about footnotes? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Overloaded lambdas in C++ and differences between clang and gcc

I'm playing with a trick to overload lambdas in C++. Specifically: // For std::function #include <functional> ... but the original one does not. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Extension methods in c++

I was searching for an implementation of extension methods in c++ and came upon this comp.std.c++ ... of curiosity than anything else. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Why there is no placement delete expression in C++?

Why C++ hasn't placement delete that directly corresponds to the placement new, i.e. calls the destructor and ... technique delete(arena) p; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - How to create timer events using C++ 11?

How to create timer events using C++ 11? I need something like: “Call me after 1 second from now”. Is there any library? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Replacement for deprecated register keyword C++ 11

I have read (here, for example) that the register keyword is deprecated in C++ 11. As such, is there an ... is it taken care by the compiler? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Default initialization of std::array?

With C++11 std::array, do I have the guarantee that the syntax std::array<T, N> x; will default- ... sure of that according to the standard or future standard. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Which headers in the C++ standard library are guaranteed to include another header?

The C++ standard library headers may include each other in unspecified ways, so programmers generally shouldn't ... of another header. What are those cases? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Does this code from "The C++ Programming Language" 4th edition section 36.3.6 have well-defined behavior?

In Bjarne Stroustrup's The C++ Programming Language 4th edition section 36.3.6 STL-like Operations the ... some form of unspecified or undefined behavior? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - C++ - Why is boost::hash_combine the best way to combine hash-values?

I've read in other posts that this seems to be the best way to combine hash-values. Could somebody please ... about the whole function, not only this part. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - C++ Modules - why were they removed from C++0x? Will they be back later on?

I just discovered this old C++0x draft about modules in C++0x. The idea was to get out of the current .h/. ... working on it for an ulterior version of C++? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - What is the 'override' keyword in C++ used for?

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Pointers in c++ after delete

After reading many posts about this, I want to clarify the next point: A* a = new A(); A* b = ... behaviour) What happens to the pointer itself after delete? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Delegate Constructor C++

Am I doing this right? I'm trying to delegate a C++ class constructor as it's basically the same code repeating ... ), IMAGE_BITMAP, 0, 0, LR_SHARED)) { } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - 'colon' and 'auto' in for loop c++? need some help understanding the syntax

I need some explanation for the following c++ syntax: for(const auto& ioDev : deviceList) given that: std::vector<Device ... about ':' and the usage of 'auto'? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - How do I activate C++ 11 in CMake?

When I try to run a CMake generated makefile to compile my program, I get the error that range based for loops ... I can activate C++ 11 features using CMake. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Why doesn't C++ use std::nested_exception to allow throwing from destructor?

The main problem with throwing exceptions from destructor is that in the moment when destructor is called another exception may ... to be changed in the C++17? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - c++ access static members using null pointer

Recently tried the following program and it compiles, runs fine and produces expected output instead of any runtime error. ... Is there any harm in my program? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - const& , & and && specifiers for member functions in C++

Recently I was reading through the API of boost::optional and came across the lines: T const& operator *() const& ; ... it means to declare it const&, & and &&. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - What is the logic behind the "using" keyword in C++?

What is the logic behind the "using" keyword in C++? It is used in different situations and I am trying to ... X; // using super class methods in derived class Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - When is std::weak_ptr useful?

I started studying smart pointers of C++11 and I don't see any useful use of std::weak_ptr. Can someone tell me when std::weak_ptr is useful/necessary? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Enforcing statement order in C++

Suppose I have a number of statements that I want to execute in a fixed order. I want to use g++ with ... // Statement 3 auto elapsedTime = t2 - t1; Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - How to change mode from c++98 mode in Dev-C++ to a mode that supports C++0x (range based for)?

I am just learning how to write range based for loops, but the only problem is that my compiler, Orwell Dev-C++ ... TDM-GCC 4.6.1 64 bit. Thanks to everyone Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - C++'s most vexing parse again

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Can I implement an autonomous `self` member type in C++?

C++ lacks the equivalent of PHP's self keyword, which evaluates to the type of the enclosing class. It's easy ... , which does the same but with late binding.) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - Difference in make_shared and normal shared_ptr in C++

std::shared_ptr<Object> p1 = std::make_shared<Object>("foo"); std::shared_ptr<Object> p2(new Object("foo")) ... . I have given one example above for reference. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++11 - OpenGL object in C++ RAII class no longer works

I have an OpenGL object in a C++ class. Since I'm employing RAII, I want to have the destructor ... attempt to build a canonical answer to these questions. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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