id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
6160,support for (istream >> array < char >),giecrilj@…,Marshall Clow,"1. `array < T >` is a replacement for `T []`
1. the standard library provides the syntax `(istream >> char [])` and `(ostream << char const [])`
1. Currently, `(istream >> array < char >)` does not mean anything
1. this functionality cannot be simulated even with `std:: copy_n < istreambuf_iterator >` without manual termination and much verbosity

== My implementation ==
{{{
#!cpp

#include <boost/array.hpp>	/* for ::boost:: array */
#include <boost/version.hpp>

#if +BOOST_VERSION <= 0313720
#include <iomanip>	/* for ::std:: setw */
namespace boost 
{ 
/* helper classes to prevent ambiguity in matching array < char > */
namespace detail_
{ 
/* normally, other char for every character type is char */
  template < class P_C > class other_char { public: typedef char type; }; 
/* but other_char is undefined for char */
  template <> class other_char < char > {}; 
/* class same_stream fails for istream */
  template 
  < class P_S, 
    class P_C = typename other_char < typename P_S:: char_type >:: type >
class same_stream { public: typedef P_S stream; }; }
/* template input */
  template < class P_C, class P_T, ::std:: size_t P_N > 
  static inline ::std:: basic_istream < P_C, P_T >
&operator >> 
  (::std:: basic_istream < P_C, P_T > &p_s, ::boost:: array < P_C, P_N > &p_a) 
  { return p_s >> ::std:: setw (p_a. static_size) >> p_a. data (); } 
/* character input, disabled for type char to avoid ambiguity */
  template < class P_C, class P_T, ::std:: size_t P_N > 
  static inline typename
  detail_:: same_stream 
< ::std:: basic_istream < P_C, P_T > >:: stream
&operator >> 
  (::std:: basic_istream < P_C, P_T > &p_s, 
   ::boost:: array < char, P_N > &p_a) 
  { return p_s >> ::std:: setw (p_a. static_size) >> p_a. data (); } 
/* template output */
  template < class P_C, class P_T, ::std:: size_t P_N > 
  static inline ::std:: basic_ostream < P_C, P_T > 
  &operator << 
(::std:: basic_ostream < P_C, P_T > &p_s, 
 ::boost:: array < P_C, P_N > const &p_a) { return p_s << p_a. begin (); }
/* character output, disabled for type char */
  template < class P_C, class P_T, ::std:: size_t P_N > 
  static inline 
typename detail_:: same_stream < ::std:: basic_ostream < P_C, P_T > >:: stream
  &operator << 
(::std:: basic_ostream < P_C, P_T > &p_s, 
 ::boost:: array < char, P_N > const &p_a) 
{ return p_s << p_a. begin (); }}
#endif	/* BOOST_VERSION */

#include <cstdlib>	/* for EXIT_SUCCESS */
#include <cstdio>	/* for BUFSIZ */
#include <iostream>	/* for ::std:: cin */

int main () 
{ // char (&x) [+BOOST_VERSION] = 0;
#ifdef ARRAY_IN_NATIVE
/* native code */
char t [+BUFSIZ]; 
 return 
   ::std:: cin >> ::std:: setw (+BUFSIZ) >> t && ::std:: cout << t << '\n'? 
+EXIT_SUCCESS: +EXIT_FAILURE; 
#else /* ARRAY_IN_NATIVE */
/* equivalent Boost code */
 ::boost:: array < char, +BUFSIZ > t; 
/* check that character input compiles for wchar_t */
 (void) sizeof (std:: wcin >> t);
 return 
::std:: cin >> t && ::std:: cout << t << '\n'? +EXIT_SUCCESS: +EXIT_FAILURE;
#endif /* ARRAY_IN_NATIVE */
}

}}}

",Feature Requests,assigned,To Be Determined,array,Boost 1.44.0,Cosmetic,,,