xcode-“尝试使用已删除的功能” - 这意味着什么？ [英] xcode - "attempt to use a deleted function" - what does that mean?

问题描述

我在Xcode 4.2中编写一个C ++库

我的一个类不会编译这个错误：试图使用一个删除的函数。 p>

没有具体的说明它在说什么功能。
我不想在这里发布类代码，但任何人都有任何想法这个错误的意思？ 在 上找不到：

感谢一堆

<在C ++ 11中，您可以将函数声明为已删除：

$ b

$ <$ p <$ p> $ b

  struct Foo {
 Foo（const Foo&）= delete; 
}; 
  pre> 
 
 
尝试使用这样的函数是一个错误，这样做的目的是，在这个例子中，这种类型的拷贝构造是不可能的，这是一个更直接的替代非可复制的技巧使用pre-C ++ 11。
 
 
 
此外，在C ++规范中有规则导致成员函数隐式删除。
 
 
 
错误告诉你，你的程序试图使用一个已删除的函数，你必须发布你的错误，得到更详细的帮助。 p> 
I am writing a C++ library in Xcode 4.2

One of my classes won't compile with this error : "attempt to use a deleted function".

There is no specific indication what function it's talking about.
I don't want to post the class code here, but does anybody have any idea what this error means? It's nowhere to be found on Google... :(

thanks a bunch

Roey
解决方案
In C++11 you can declare functions as deleted:
struct Foo {
    Foo(const Foo &) = delete;
};
Attempting to use such a function is an error. The purpose of doing this is so that, in this example, copy construction of this type is not possible. This is a more direct replacement for the non-copyable trick used pre-C++11.

Also, there are rules in the C++ spec that lead to member functions being implicitly deleted.

The error is telling you that your program attempts to use a deleted function. You'll have to post the error you're getting for more detailed help.

                        
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