Rcpp Version 0.12.12
is_convertible.h
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3 //
4 // is_convertible.h: Rcpp R/C++ interface class library -- type conversion detection
5 //
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22 
23 #ifndef Rcpp__traits__is_convertible_h
24 #define Rcpp__traits__is_convertible_h
25 
26 namespace Rcpp{
27 namespace traits{
28 
29  template<typename T, typename U> class is_convertible{
30 
31  typedef char Small ;
32  typedef struct { char dummy[2] ; } Big ;
33  static Small Test( const U& ) ;
34  static Big Test(...) ;
35  static T MakeT() ;
36 
37  public:
38 
39  typedef bool value_type ;
40  static const bool value = sizeof(Test(MakeT())) == sizeof(Small) ;
42 
43  } ;
44 
45 }
46 }
47 
48 #endif
static Small Test(const U &)
Rcpp API.
Definition: algo.h:28
integral_constant< bool, value > type