Date: Sat, 23 Mar 2013 14:12:24 +0100 (CET) From: nfarnsworth@web.de To: boost@lists.boost.org Subject: [boost] [multi-array] compiler errors with visual studio 2012 Message-ID:         Content-Type: text/plain; charset="UTF-8"

  Hello,   have this c++ example which compiles with Visual Studio 2010 but with Visual   Studio 2012 I got this compiler errors:   1>------ Build started: Project: MultiArrayDemo, Configuration: Debug Win32   ------   1>  MultiArrayDemo.cpp   1>d:\sandbox\multiarraydemo\multiarraydemo\multiarraydemo.cpp(11):error   C2059: syntax error : '<'   1>        d:\sandbox\multiarraydemo\multiarraydemo\multiarraydemo.cpp(25)   : see reference to class template instantiation 'Data<T>' being compiled   1>d:\sandbox\multiarraydemo\multiarraydemo\multiarraydemo.cpp(11):error   C2238: unexpected token(s) preceding ';'   ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========   The example uses the boost 1.53 version. Here is the example code:   #include "stdafx.h"   #include   const int rows = 3;   const int cols = 5;   template<class T> struct Data   {     typedef boost::multi_array data_type;     typedef typename data_type::array_view<1>::type view_type; //here is the   first error     typedef typename data_type::index_range range;     Data()     :A(boost::extents[rows][cols])     {       double tmp[] =   {1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0,13.0,14.0,15.0};       A.assign(tmp,tmp+ (rows * cols));     }     data_type A;   };   int _tmain(int argc, _TCHAR* argv[])   {

    Data<double>* data = new Data<double>();     Data<double>::view_type myView =   data->A[boost::indices[0][Data<double>::range()]];     delete data;     return 0;   }   Does anybody know how to solve this problem?   Best regards and thank you in advance   Niklas

According to Microsoft, the code is non-conformant. Visual Studio 2010 allowed the code to be compiled, but 2012 tightened the requirement. See: http://msdn.microsoft.com/en-us/library/bb531344.aspx (Second point, "Use the template keyword...", but note that they highlighted the wrong keyword). The simple fix is to add the keyword 'template':     typedef typename data_type::template array_view<1>::type view_type; //here is the  first error Dan Searles