From: daniel.kruegler@googlemail.com   
      
   On 2012-09-07 06:43, Ivan Godard wrote:   
   > Generalization question: your has_member_foo tests for a specific   
   > member. Can it be written to test for an arbitrary member that is an   
   > argument to the test? That is, is   
   >     has_member(someMemberName)   
   > possible, testing whether std::declval().someMemberName() exists   
   > for an argument member name?  I don't see how the desired member name   
   > could be passed; pointer-to-member seems to beg the question.   
      
   You would need to wrap this into a macro. This is the typical way how   
   this kind of code reusage is realized by template libraries like boost.   
      
   HTH & Greetings from Bremen,   
      
   Daniel Krügler   
      
      
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