将 std::bind 与 boost::signals2 一起使用是否安全？
使用 std::bind 将成员函数传递给 boost::signals2::signal::connect() 是否安全？换句话说，boost::bind 和 std::bind 可以互换吗？
它使用 VC++ 2010 SP1 进行编译，但模板代码超出了我的能力范围，我担心我可能会冒险进入未定义的行为领域。
Is it safe to use std::bind to pass a member function to boost::signals2::signal::connect()? In other words, is boost::bind and std::bind interchangeable?
It compiles with VC++ 2010 SP1, but the template code is way over my head and I'm afraid I might be venturing into undefined behaviour territory.
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我在这个主题上没有经验，因为我希望
connect能够采取任何实现有效函数调用运算符的东西。使用与签名匹配的任何函数或函数对象调用它应该是安全的，无论是 boost::bind、std::bind 还是其他任何东西。 Boost 库被设计为通用的，因此它们通常不会选择彼此的实现细节。I'm not experienced in the subject by I would expect
connectto take anything that implements a valid function call operator. It should be safe to call it with any function or function object that matches the signature, be it boost::bind, std::bind or anything else. Boost libraries are designed to be generic, so they usually don't go picking each others implementation details.connect函数采用一个boost::function对象，它基本上是一个包含operator()< 的任何东西的通用包装器< /code> 为其定义。因此，它与您所绑定的内容一样安全。例如，这是相当安全的：
这是相当安全的，因为它存储了
boost::shared_ptr作为其数据的一部分。这是有条件安全的。如果该连接仍然存在并且您执行删除 pValue，它会立即变得不安全。
就我个人而言，我不太相信“有条件安全”，但这取决于你。要点是，只要绑定到
boost::bind，您绑定的所有内容都必须继续存在。The
connectfunction takes aboost::functionobject, which is basically a generic wrapper around anything that has anoperator()defined for it. Therefore it is exactly as safe as what you are binding.For example, this is reasonably safe:
This is reasonably safe because it stores a
boost::shared_ptras part of its data.This is conditionally safe. It instantly becomes unsafe if that connection still exists and you execute
delete pValue.Personally, I don't put much faith in "conditionally safe", but that's up to you. The point being that everything you bind to
boost::bindmust continue to exist so long as it is bound.