关于map中问题
首先我定义了一个map对象
map <string, loc *> *word_map ;
其中loc的定义如下:
typedef vector <location> loc
然后
word_map = new map <string, loc *> ;
这样编译会有212个warns,有点多,不知道是为什么,
下面是一个warn
warning C4786: 'std::_Tree <std::basic_string <char,std::char_traits <char> ,std::allocator <char> > ,std::pair <std::basic_string <char,std::char_traits <char> ,std::allocator <char> > const ,std::vector <std::pair <short,short> ,std::allocator <std::pair <short,s
hort> > > *> ,std::map <std::basic_string <char,std::char_traits <char> ,std::allocator <char> > ,std::vector <std::pair <short,short> ,std::allocator <std::pair <short,short> > > *,std::less <std::basic_string <char,std::char_traits <char> ,std::allocator <char> >
> ,std::allocator <std::vector <std::pair <short,short> ,std::allocator <std::pair <short,short> > > *> > ::_Kfn,std::less <std::basic_string <char,std::char_traits <char> ,std::allocator <char> > > ,std::allocator <std::vector <std::pair <short,short> ,std::allocato
r <std::pair <short,short> > > *> > ::_Redbl ' : identifier was truncated to '255 ' characters in the debug information
于是我改为
map <string, loc *, less <string> , allocator> *word_map ;
其中loc的定义不变
然后
word_map = new map <string, loc *, less <string> , allocator> ;
可是这样warning少了,但是有错误,错误如下,
F:\c++\wrok\练习\C++ primer练习\单词查询系统\完整程序.cpp(55) : error C2955: 'allocator ' : use of class template requires template argument list
c:\program files\microsoft visual studio\vc98\include\xmemory(72) : see declaration of 'allocator '
F:\c++\wrok\练习\C++ primer练习\单词查询系统\完整程序.cpp(134) : error C2955: 'allocator ' : use of class template requires template argument list
c:\program files\microsoft visual studio\vc98\include\xmemory(72) : see declaration of 'allocator '
F:\c++\wrok\练习\C++ primer练习\单词查询系统\完整程序.cpp(134) : error C2512: 'map <class std::basic_string <char,struct std::char_traits <char> ,class std::allocator <char> > ,class std::vector <struct std::pair <short,short> ,class std::allocator <struct st
d::pair <short,short> > > *,struct std::less <class std::basic_string <char,struct std::char_traits <char> ,class std::allocator <char> > > ,class std::allocator> ' : no appropriate default constructor available
请有耐心看完的朋友指教,多谢!
[解决办法]
加#pragma warning(disable:4786)在所有的h文件的最前面，就不会有那个4786的warning了
