Question

我正在尝试使用boost的线程工具来就地实施快速排序。不幸的是，当我的函数没有超载时，我收到关于“”的错误。代码如下：

#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <boost/thread.hpp>

template<typename T>
void quicksortInPlace(std::vector<T> &array,
                      size_t left,
                      size_t right,
                      size_t pivot)
{
    size_t storeIndex = left;
    // ...
    if (left < storeIndex)
    {
        boost::thread lessThread(quicksortInPlace,
                                 array,
                                 left+0,
                                 storeIndex-1,
                                 storeIndex-1);
        lessThread.join();
    }
    if (right > storeIndex)
    {
        boost::thread moreThread(quicksortInPlace,
                                 array,
                                 storeIndex+1,
                                 right+0,
                                 storeIndex+1);
        moreThread.join();
    }

}


int main()
{
    std::vector<std::string> stuff;
    stuff.push_back("two");
    stuff.push_back("one");
    size_t left  = 0;
    size_t right = 1;
    size_t pivot = 0;
    quicksortInPlace(stuff,left,right,pivot);
    return 0;
}

我遇到以下编译错误（使用stlfilt清理g ++输出：gfilt -width：o main.cpp）

BD Software STL Message Decryptor v3.10 for gcc 2/3/4
main.cpp: In function ‘void quicksortInPlace(vector<string> &, size_t, size_t, size_t)’:
main.cpp:56:   instantiated from here
main.cpp:36: error: No match for ‘boost::thread::thread(<unresolved overloaded function type>, vector<string> &, size_t, size_t, size_t)’
main.cpp:41: error: No match for ‘boost::thread::thread(<unresolved overloaded function type>, vector<string> &, size_t, size_t, size_t)’

在这里，我使用了“left + 0”而不是left，因此错误不是

的形式

main.cpp:41: error: No match for ‘boost::thread::thread(<unresolved overloaded function type>, vector<string> &, size_t, size_t &, size_t)’

如何消除这种歧义？

Answer 1

需要quicksortInPlace<T>。

从boost :: thread调用模板化函数时，“未解析的重载函数类型”

1 个答案: