No member named 'bind" in the namespace of std error

Question

The following codes can run very well in WINDOWS and LINUX but fail in MAC:

template <typename T>
inline bool similar_fun(const std::vector<T> &a, const std::vector<T> &B, T threshold)
{
    using namespace std::placeholders;

    std::vector<T> differ;
    std::transform(a.begin(), a.end(), b.begin(),
        std::back_inserter(differ), std::bind(sub_fun<T>, _1, _2));

    return (std::accumulate(differ.begin(), differ.end(), static_cast<T>(0), Norm2<T>()) <= threshold);
}

The development platform is Xcode 4, and the compiler is Clang LLVM 1.0. I also make sure that the compiler is using the new C++ standard c++0x. The error messages are as follows:

   using namespace std::placeholders; *Expect namespace name
std::bind(sub_fun) *No member named "bind" in namespace std

Did you explicitly include ``? Sometimes headers get implicitly included in some platforms, but not in others. — Arne Mertz, Jun 13 '13 at 14:19
LLVM 1.0? Are you sure? This compiler [is dated](http://llvm.org/releases/) 24 Oct 2003. — John Dibling, Jun 13 '13 at 14:31
@JohnDibling just went to the realease site and noticed it's pretty old. I guess it's just an old standard library. — Arne Mertz, Jun 13 '13 at 14:32

score 1 · Accepted Answer · answered Jun 13 '13 at 14:36

1

Clang LLVM 1.0 seems pretty old, it's from 2003, so the standard library you have installed probably is a C++03 standard library that does not have placeholders and bind. You could try to include new C++11 headers, e.g. <array> to confirm that.

If I am right, just update your compiler :-)

answered Jun 13 '13 at 14:36

Arne Mertz

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Thanks, and could you let me know how to update the compiler? You are right and I cannot compile if head file is included. – feelfree Jun 13 '13 at 15:14
Uhm, I honeslty have no experience with XCode, LLVM and MAC. But a quick googling told me the updating xcode should be possible from the app store: http://stackoverflow.com/questions/14823519/xcode-update-from-4-5-1-to-4-6 – Arne Mertz Jun 13 '13 at 15:43
There are also possibilities of getting more recent versions of Clang than the one included in the latest XCode: http://stackoverflow.com/questions/8674546/how-to-update-llvm-clang-on-mac-osx – Arne Mertz Jun 13 '13 at 15:46

No member named 'bind" in the namespace of std error

1 Answers1