C++ 定义模板c++；

这是一个noob问题对不起：( 我不知道为什么这会给我一个错误，有人能解释一下吗？ 例如，我想做：

vector<double> a;
string s("0.11 11.0002");
copys(s, a);


template <typename T, typename S>
void copys(T& c, S& d)
{
    istringstream iss(c);
    copy(istream_iterator<S>(iss), istream_iterator<S>(),
        back_inserter(d));
    return;
}

向量a；
字符串s（“0.11.0002”）；
副本（s，a）；
样板
无效副本（T&c、S&d）
{
istringstream iss（c）；
复制（istream_迭代器（iss），istream_迭代器（），
背部插入器（d）；
回来
}

编译器的错误是：

   /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stream_iterator.h: In member function `void std::istream_iterator<_Tp, _CharT, _Trai
    ts, _Dist>::_M_read() [with _Tp = std::vector<double, std::allocator<double> >, _CharT = char, _Traits = std::char_traits<char>, _Dist
    = int]':
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stream_iterator.h:68:   instantiated from `std::istream_iterator<_Tp, _CharT, _Trait
    s, _Dist>::istream_iterator(std::basic_istream<_CharT, _Traits>&) [with _Tp = std::vector<double, std::allocator<double> >, _CharT = ch
    ar, _Traits = std::char_traits<char>, _Dist = int]'
    ProfitCalculator.cpp:20:   instantiated from `void copys(T&, S&) [with T = std::basic_string<char, std::char_traits<char>, std::allocat
    or<char> >, S = std::vector<double, std::allocator<double> >]'
    ProfitCalculator.cpp:41:   instantiated from here
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stream_iterator.h:119: error: no match for `operator>>' in `*((std::istream_iterator
    <std::vector<double, std::allocator<double> >, char, std::char_traits<char>, int>*)this)->std::istream_iterator<std::vector<double, std
    ::allocator<double> >, char, std::char_traits<char>, int>::_M_stream >> ((std::istream_iterator<std::vector<double, std::allocator<doub
    le> >, char, std::char_traits<char>, int>*)this)->std::istream_iterator<std::vector<double, std::allocator<double> >, char, std::char_t
    raits<char>, int>::_M_value'
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:123: note: candidates are: std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>& (*)(std::basic_istream<_CharT, _Traits>&)) [with _CharT = char, _Tr
    aits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:127: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(std::basic_ios<_CharT, _Traits>& (*)(std::basic_ios<_CharT, _Traits>&)) [with _CharT = char, _Traits = s
    td::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:134: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:170: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(bool&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:174: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(short int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:177: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:181: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:184: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:188: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(long int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:192: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:197: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:201: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:206: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(float&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:210: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(double&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:214: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(long double&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:218: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(void*&) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/istream:242: note:                 std::basic_istream<_CharT, _Traits>& std::basic_istrea
    m<_CharT, _Traits>::operator>>(std::basic_streambuf<_CharT, _Traits>*) [with _CharT = char, _Traits = std::char_traits<char>]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stl_algobase.h: In static member function `static _OI std::__copy_move<<anonymous>,
    <anonymous>, <template-parameter-1-3> >::__copy_m(_II, _II, _OI) [with _II = std::istream_iterator<std::vector<double, std::allocator<d
    ouble> >, char, std::char_traits<char>, int>, _OI = std::back_insert_iterator<std::vector<double, std::allocator<double> > >, bool <ano
    nymous> = false, bool <anonymous> = false, <template-parameter-1-3> = std::input_iterator_tag]':
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stl_algobase.h:396:   instantiated from `_OI std::__copy_move_a(_II, _II, _OI) [with
     bool _IsMove = false, _II = std::istream_iterator<std::vector<double, std::allocator<double> >, char, std::char_traits<char>, int>, _O
    I = std::back_insert_iterator<std::vector<double, std::allocator<double> > >]'
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stl_algobase.h:435:   instantiated from `_OI std::__copy_move_a2(_II, _II, _OI) [wit
    h bool _IsMove = false, _II = std::istream_iterator<std::vector<double, std::allocator<double> >, char, std::char_traits<char>, int>, _
    OI = std::back_insert_iterator<std::vector<double, std::allocator<double> > >]'
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stl_algobase.h:466:   instantiated from `_OI std::copy(_II, _II, _OI) [with _II = st
    d::istream_iterator<std::vector<double, std::allocator<double> >, char, std::char_traits<char>, int>, _OI = std::back_insert_iterator<s
    td::vector<double, std::allocator<double> > >]'
    ProfitCalculator.cpp:20:   instantiated from `void copys(T&, S&) [with T = std::basic_string<char, std::char_traits<char>, std::allocat
    or<char> >, S = std::vector<double, std::allocator<double> >]'
    ProfitCalculator.cpp:41:   instantiated from here
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stl_algobase.h:312: error: no match for `operator=' in `__result.std::back_insert_it
    erator<_Container>::operator* [with _Container = std::vector<double, std::allocator<double> >]() = __first.std::istream_iterator<_Tp, _
    CharT, _Traits, _Dist>::operator* [with _Tp = std::vector<double, std::allocator<double> >, _CharT = char, _Traits = std::char_traits<c
    har>, _Dist = int]()'
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stl_iterator.h:412: note: candidates are: std::back_insert_iterator<_Container>& std
    ::back_insert_iterator<_Container>::operator=(typename _Container::const_reference) [with _Container = std::vector<double, std::allocat
    or<double> >]
    /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/bits/stl_iterator.h:388: note:                 std::back_insert_iterator<std::vector<doub
    le, std::allocator<double> > >& std::back_insert_iterator<std::vector<double, std::allocator<double> > >::operator=(const std::back_ins
    ert_iterator<std::vector<double, std::allocator<double> > >&)
    make: *** [ProfitCalculator] Error 1

/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/bits/stream_iterator.h:在成员函数'void std:：istream_iterator:：_M_read（）[with _Tp=std:：vector，_CharT=char，_Traits=std:：char_Traits，_Dist
=int]'：
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/bits/stream\u iterator.h:68：从'std:：istream\u iterator:：istream\u iterator（std:：basic\u istream&'）实例化[with Tp=std:：vector，CharT=ch
ar，_Traits=std:：char_Traits，_Dist=int]'
ProfitCalculator.cpp:20:从“void copys（T&，S&）[with T=std:：basic_string，S=std:：vector]实例化”
ProfitCalculator.cpp:41:从此处实例化
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/bits/stream\u迭代器。h:119:错误：与“*”（（std:：istream\u迭代器）中的“operator>>”不匹配
*)this）->std：：istream_迭代器：：_M_stream>>（（std：：istream_迭代器*）this）->std：：istream_迭代器：：_M_value'
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:123：注：候选项为：std:：basic\u istream&std:：basic\u istream
m:：operator>>（std:：basic_istream&（*）（std:：basic_istream&））[带_CharT=char，_Tr
aits=std:：char\u特征]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:127：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（std:：basic_ios&（*）（std:：basic_ios&）[带_CharT=char，_Traits=s
td:：char_特征]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:134：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（std:：ios_base&（*）（std:：ios_base&）[带_CharT=char，_Traits=std:：char_Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:170：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（bool&）[带有_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:174：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（短int&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:177：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（短无符号int&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:181：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（int&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:184：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（unsigned int&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:188：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（长整数&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:192：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（长无符号int&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:197：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（long long int&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:201：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（长-长无符号int&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:206：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（float&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:210：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（双重&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:214：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（长双（&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:218：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（void*&）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/istream:242：注：std:：basic\u istream&std:：basic\u istream
m:：operator>>（std:：basic\u streambuf*）[带_CharT=char，_Traits=std:：char\u Traits]
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/bits/stl_algobase.h:在静态成员函数中'static'u OI std:：'u copy'u move:：'u copy'm（'u II，'u II，'u OI）[带'u II=std:：istream\u迭代器，'u OI std:：back u insert\u迭代器，bool=false，=std:：input\u迭代器标签]：
/usr/lib/gcc/i686 pc-cygwin/4.3.4/include/c++/bits/stl_-algobase.h:396:从`"OI-std:："复制"移动"a（_-II，_-II，_-OI）[带
bool\u IsMove=false，\u II=std:：istream\u迭代器，\u O
I=std:：back\u insert\u迭代器]'
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/bits/stl_-algobase.h:435:从`"我的标准：："复制"移动"a2（_-II，_-II，_-OI）实例化
h bool _IsMove=false，_II=std:：istream\u迭代器_
OI=std:：返回\u插入\u迭代器]'
/usr/lib/gcc/i686 pc cygwin/4.3.4/include/c++/bits/stl_-algobase.h:466：从`_-OI-std:：copy（_-II，_-II，_-OI）实例化）[带_-II=st
d:：istream\u迭代器，\u OI=std:：back\u insert\u迭代器]'
ProfitCalculator.cpp:20:从“void copys（T&，S&）[with T=std:：basic_string，S=std:：vector]实例化”
ProfitCalculator.cpp:41:从此处实例化
/美国
copy(istream_iterator<S>(iss), istream_iterator<S>(),
        back_inserter(d));

copy(istream_iterator<vector<double> >(iss), istream_iterator<vector<double> >(),
                      ^^^^^^^^^^^^^^^                         ^^^^^^^^^^^^^^^
        back_inserter(d));

typedef typename S::value_type value_type;
copy(istream_iterator<value_type>(iss), istream_iterator<value_type>(),
        back_inserter(d));