C++11 std::bind 和 boost::bind 的区别

问题描述

这两者有什么区别吗?或者我是否可以安全地在我的代码中用 std::bind 替换每次出现的 boost::bind ，从而消除对 Boost 的依赖?

Is there any difference between the two? Or am I safe to replace every occurrence of boost::bind by std::bind in my code and thereby remove the dependence on Boost?

推荐答案

• boost::bind 有重载关系运算符，std::bind 没有.

  boost::bind 支持非默认调用约定，不保证std::bind(标准库实现可能会将此作为扩展提供).

  boost::bind supports non-default calling conventions, std::bind is not guaranteed to (standard library implementations may offer this as an extension).

  boost::bind 提供了一种直接机制，允许防止对嵌套绑定表达式(boost::protect), std::bind才不是.(也就是说，如果需要，可以将 boost::protect 与 std::bind 一起使用，或者自己简单地重新实现它.)

  boost::bind provides a direct mechanism to allow one to prevent eager evaluation of nested bind expressions (boost::protect), std::bind does not. (That said, one can use boost::protect with std::bind if they want, or trivially reimplement it on their own.)

  std::bind 提供了一种直接机制，允许将任何用户定义的函子视为嵌套的绑定表达式，以便强制急切求值(std::is_bind_expression: [func.bind.isbind]/1, [func.bind.bind]/10)，boost::bind 没有.

  std::bind provides a direct mechanism to allow one to treat any user defined functor as a nested bind expression in order to force eager evaluation (std::is_bind_expression: [func.bind.isbind]/1, [func.bind.bind]/10), boost::bind does not.

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