Difference between C++11 std::bind and boost::bind

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  • boost::bind has overloaded relational operators, std::bind does not.

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

  • 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 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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