示例解析错误

本文介绍了示例解析错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我正在尝试按照示例解析提升精神 (2.5.2) 的示例.我的代码如下I'm trying to parse an example of boost spirit (2.5.2) following the example. My code is the following#include <boostspirithomeqi.hpp>#include <iostream>#include <string>#include <utility>int main(){ // Parsing two numbers std::string input("1.0 2.0"); std::pair<double, double> p; boost::spirit::qi::phrase_parse( input.begin(), input.end(), boost::spirit::qi::double_ >> boost::spirit::qi::double_ , // Parse grammar boost::spirit::qi::space, p ); return 0;}它几乎等于找到的例子 此处，但是当我使用 Visual Studio 2010(32 位，调试)编译它时，出现以下错误:It's almost equal to the example found here, but when I compile it with Visual studio 2010 (32 bit, debug) I obtain the following error:error C2440: 'static_cast': unable to convert from 'const double' to 'std::pair<_Ty1,_Ty2>'(错误可能略有不同，我是从意大利语翻译过来的)(the error can be slighty different, I've translated it from italian)我做错了什么，我怎样才能成功编译这个例子?What I'm doing wrong and how can I compile successfully the example?预先感谢您的回复.推荐答案您缺少一个包含:#include <boost/fusion/adapted/std_pair.hpp>它定义了属性分配规则，使 Fusion 序列 (vector2) 可分配给 std::pair.It defines the attribute assignment rules to make Fusion sequences (vector2<>) assignable to std::pair.查看实时代码:liveworkspace.orgSee the code live: liveworkspace.org#include <boost/spirit/include/qi.hpp>#include <boost/fusion/adapted/std_pair.hpp>#include <iostream>#include <string>#include <utility>int main(){ // Parsing two numbers std::string input("1.2 3.4"); std::pair<double, double> p; namespace qi = boost::spirit::qi; qi::phrase_parse( input.begin(), input.end(), qi::double_ >> qi::double_ , // Parse grammar qi::space, p); std::cout << "Lo: " << p.first << "" << "Behold: " << p.second << "";} 这篇关于示例解析错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！