fork download
copy 
  1. namespace X
  2. {
  3.   template<typename T, unsigned int SIZE>
  4.   bool IsArray (T (&a)[SIZE]) { return true; }
  5.  
  6.   template<typename T>
  7.   bool IsArray (T *p) { return false; }
  8. }
  9.  
  10. namespace Y
  11. {
  12.   typedef char (&yes)[2];
  13.  
  14.   template<typename T, unsigned int SIZE>
  15.   yes IsArray (T (&a)[SIZE]);
  16.  
  17.   template<typename T>
  18.   char IsArray (T *p);
  19. }
  20.  
  21. using namespace X;
  22.  
  23. int main ()
  24. {
  25.   const char *s2 = "hello";
  26. #if 1
  27.   if(true == IsArray(s2))
  28.     throw 0;
  29. #else
  30.   if(sizeof(IsArray(s2)) == sizeof(yes))
  31.     throw 0;
  32. #endif
  33. }
  34.  
Success #stdin #stdout 0.01s 2720KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/tjW48
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!