调用"查找"没有匹配函数

Question

我有以下代码:

#include <algorithm>
#include <vector>
#include <iostream>
#include <stdio.h>
using namespace std;
int main()
{   
    typedef vector<int> IntContainer;
    typedef IntContainer::iterator IntIterator;
    IntContainer vw;
    IntIterator i = find(vw.begin(), vw.end(), 5);
    if (i != vw.end()) 
        {
        printf("Find 5 in vectorn");   // found it
      }
        else 
        {
            printf("Couldn't find 5 in vectorn");  // couldn't found it
        }
    return 0;
}

我尝试用gcc 4.7.1在Ubuntu上编译它，得到以下错误:

vec_test.cpp: In function ‘int main()’:
vec_test.cpp:27:46: error: no matching function for call to ‘find(std::vector<int>::iterator, std::vector<int>::iterator, int)’
vec_test.cpp:27:46: note: candidate is:
In file included from /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.1/../../../../include/c++/4.7.1/bits/locale_facets.h:50:0,
                 from /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.1/../../../../include/c++/4.7.1/bits/basic_ios.h:39,
                 from /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.1/../../../../include/c++/4.7.1/ios:45,
                 from /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.1/../../../../include/c++/4.7.1/ostream:40,
                 from /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.1/../../../../include/c++/4.7.1/iostream:40,
                 from vec_test.cpp:3:
/usr/local/lib/gcc/i686-pc-linux-gnu/4.7.1/../../../../include/c++/4.7.1/bits/streambuf_iterator.h:371:5: note: template<class _CharT2> typename __gnu_cxx::__enable_if<std::__is_char<_CharT2>::__value, std::istreambuf_iterator<_CharT2, std::char_traits<_CharT> > >::__type std::find(std::istreambuf_iterator<_CharT2, std::char_traits<_CharT> >, std::istreambuf_iterator<_CharT2, std::char_traits<_CharT> >, const _CharT2&)
/usr/local/lib/gcc/i686-pc-linux-gnu/4.7.1/../../../../include/c++/4.7.1/bits/streambuf_iterator.h:371:5: note:   template argument deduction/substitution failed:
vec_test.cpp:27:46: note:   ‘__gnu_cxx::__normal_iterator<int*, std::vector<int> >’ is not derived from ‘std::istreambuf_iterator<_CharT2, std::char_traits<_CharT> >’

这段代码没有做任何事情，因为vector没有初始化任何内容，但应该可以编译。

我怀疑这是一个gcc问题，但经过大量的挖掘，我退出绝望。请让我知道如果有人遇到这个问题，知道如何解决它。

Answer 1

也许一些文件定义了一个函数查找在全局命名空间?

您是否尝试指定全作用域?也就是说，用std::find代替find。它可以帮助删除奇怪的行:

using namespace std;

然而，这不是我所期望的。