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Text File  |  1992-11-22  |  986 b   |  39 lines
  1. Path: sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!agate!stanford.edu!rutgers!concert!uvaarpa!murdoch!virginia.edu!gs4t
  2. From: gs4t@virginia.edu (Gnanasekaran Swaminathan)
  3. Newsgroups: comp.lang.c++
  4. Subject: Re: template member func:  class X { template<class T> f(T& x) {...}}
  5. Message-ID: <1992Nov22.210314.18135@murdoch.acc.Virginia.EDU>
  6. Date: 22 Nov 92 21:03:14 GMT
  7. References: <mg.722310420@elan>
  8. Sender: usenet@murdoch.acc.Virginia.EDU
  9. Organization: University of Virginia
  10. Lines: 27
  11.  
  12. mg@elan (Michael Golan) writes:
  13. : Why isnt this allowed?
  14. : 
  15. : class File {
  16. :     binwrite(void *buf,size_t sz) {...} // write buf of length sz 
  17. : public:
  18. :     template<class T> write(T& buf) { binwrite(buf,sizeof(T)); }
  19. : };
  20.  
  21. Because there is an alternate way to do the same.
  22.  
  23. template <class T>
  24. class File {
  25.     void binwrite(void* buf, int sz) {}
  26. public:
  27.     void write(T* b) { binwrite(b, sizeof(T)); }
  28. };
  29.  
  30. main()
  31. {
  32.     File<int> f;
  33.     int     i = 0;
  34.  
  35.     f.write(&i);
  36. }
  37.  
  38. -Sekar
  39.