tr1

I have been using VS 2005 (VC8) with Boost.TR1 in the std::tr1 namespace by setting the Include Directories of VS to prioritize the boost tr1 headers as described here . Now I am moving over to VS 2010 (VC10) and I seem to be getting compilation errors using the same include method. The Include Directories are set to: [boost-root]\boost\tr1\tr1 [boost-root] VC standard include directories Sample code: #include <functional> #include <iostream> int main(int argc, char ** argv) { std::cout << std::tr1::bind(std::minus<int>(), 5, std::tr1::placeholders::_1)(5) << std::endl; return 0; } Build

I have class with a member function that takes a default argument. struct Class { void member(int n = 0) {} }; By means of std::tr1::mem_fn I can invoke it: Class object; std::tr1::mem_fn(&Class::member)(object,10); That said, if I want to invoke the callable member on the object with the default argument, what's the correct syntax? std::tr1::mem_fn(&Class::member)(object); // This does not work g++ complains with the following error: test.cc:17: error: no match for call to ‘(std::tr1::_Mem_fn<void (Class::*)(int)>) (Class&)’ /usr/include/c++/4.3/tr1_impl/functional:551: note: candidates are:

We are programming a logging library that keeps itself in a .hpp file. We would like to include <tr1/unordered_map> (if the compiler supports TR1,) or the standard <map> otherwise. Is there a standard way of checking at compile time if tr1 is available or not? I was thinking that the same way that the " __cplusplus " define symbol is present, there could have been defined a " __cxx__tr1 " or something like that. I haven't seen that in the drafts for TR1, so I assume it is not present, but I wanted to ask first just in case. As a note, if those defines don't exist, it wouldn't be a bad idea to

I have a problem using a very complicated C function in a C++ class (rewriting the C function is not an option). C function: typedef void (*integrand) (unsigned ndim, const double* x, void* fdata, unsigned fdim, double* fval); // This one: int adapt_integrate(unsigned fdim, integrand f, void* fdata, unsigned dim, const double* xmin, const double* xmax, unsigned maxEval, double reqAbsError, double reqRelError, double* val, double* err); I need to supply a void function of type integrand myself, and adapt_integrate will calculate the n-dimensional integral. The code in calcTripleIntegral (below)

How can I access target of a std::tr1::shared_ptr in GDB. This doesn't work: (gdb) p sharedPtr->variableOfTarget If I try with the pointer object itself ( p sharedPtr ) I get something like this: $1 = std::tr1::shared_ptr (count 2) 0x13c2060 With a normal pointer I can do p *ptr and get all the data or p ptr->variable for just one variable. I'm on Centos 6.5, GCC 4.4.7-4.el6 and GDB 7.2-64.el6_5.2. Try with (gdb) p (*sharedPtr.get()) that function returns the a pointer to the object owned by the smart pointer. ptr->get() not always work. when i try ptr->get(), gdb complains for: can not

I am working on a platform with a gcc compiler however boost cannot compile on it. I am wondering what is the proper way to include the shared_ptr in std:tr1 on gcc? the file i looked in said not to include it directly, from what i can tell no other file includes it either :| bdonlan In G++ 4.3 , #include <tr1/memory> should do the trick. You'll find shared_ptr at std::tr1::shared_ptr . Boost itself has the answer . Boost can not compile on it? Most of the boost library doesn't need to be compiled to be used, and I guess shared_ptr doesn't either. 来源： https://stackoverflow.com/questions/471438