to_string( const /& n) 是模棱两可的[关闭]

【问题标题】：to_string( const /& n) is ambiguos [closed]to_string( const /& n) 是模棱两可的[关闭]
【发布时间】：2018-08-28 01:59:02
【问题描述】：

我正在使用 binance cpp api 开发软件。

现在我遇到的问题是，在我安装的 raspian 和代码块上，我无法将提供的预编译 .so 库用于 binacpp 标头。

所以我读到我需要为我的系统编译它并尝试通过终端运行 make 现在发生了这种情况：

pi@raspberrypi:~/Desktop/patch/src $ make
g++ -I../lib/libcurl-7.56.0/include -I../lib/jsoncpp-1.8.3/include -c binacpp.cpp  -fPIC   -o ../lib/libbinacpp/lib/binacpp.o 
binacpp.cpp: In static member function ‘static void BinaCPP::send_order(const char*, const char*, const char*, const char*, double, double, const char*, double, double, long int, Json::Value&)’:
binacpp.cpp:909:39: error: call of overloaded ‘to_string(double&)’ is ambiguous
  post_data.append( to_string( quantity) );
                                       ^
In file included from binacpp.cpp:16:0:
binacpp_utils.h:28:15: note: candidate: std::__cxx11::string to_string(const T&) [with T = double; std::__cxx11::string = std::__cxx11::basic_string<char>]
 inline string to_string (const T& t)
               ^~~~~~~~~
binacpp_utils.h:36:20: note: candidate: std::__cxx11::string to_string(double)
 static std::string to_string(double val)
                    ^~~~~~~~~
In file included from /usr/include/c++/6/string:52:0,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from binacpp.h:19,
                 from binacpp.cpp:14:
/usr/include/c++/6/bits/basic_string.h:5522:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long double)
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5513:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(double)
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5504:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(float)
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5498:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long unsigned int)
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5492:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long int)
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5486:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long unsigned int)
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5481:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long int)
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5475:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(unsigned int)
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5470:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(int)
   to_string(int __val)
   ^~~~~~~~~
binacpp.cpp:912:36: error: call of overloaded ‘to_string(double&)’ is ambiguous
  post_data.append( to_string( price) );
                                    ^
In file included from binacpp.cpp:16:0:
binacpp_utils.h:28:15: note: candidate: std::__cxx11::string to_string(const T&) [with T = double; std::__cxx11::string = std::__cxx11::basic_string<char>]
 inline string to_string (const T& t)
               ^~~~~~~~~
binacpp_utils.h:36:20: note: candidate: std::__cxx11::string to_string(double)
 static std::string to_string(double val)
                    ^~~~~~~~~
In file included from /usr/include/c++/6/string:52:0,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from binacpp.h:19,
                 from binacpp.cpp:14:
/usr/include/c++/6/bits/basic_string.h:5522:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long double)
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5513:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(double)
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5504:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(float)
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5498:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long unsigned int)
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5492:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long int)
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5486:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long unsigned int)
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5481:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long int)
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5475:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(unsigned int)
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5470:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(int)
   to_string(int __val)
   ^~~~~~~~~
binacpp.cpp:921:42: error: call of overloaded ‘to_string(double&)’ is ambiguous
   post_data.append( to_string( stopPrice ) );
                                          ^
In file included from binacpp.cpp:16:0:
binacpp_utils.h:28:15: note: candidate: std::__cxx11::string to_string(const T&) [with T = double; std::__cxx11::string = std::__cxx11::basic_string<char>]
 inline string to_string (const T& t)
               ^~~~~~~~~
binacpp_utils.h:36:20: note: candidate: std::__cxx11::string to_string(double)
 static std::string to_string(double val)
                    ^~~~~~~~~
In file included from /usr/include/c++/6/string:52:0,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from binacpp.h:19,
                 from binacpp.cpp:14:
/usr/include/c++/6/bits/basic_string.h:5522:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long double)
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5513:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(double)
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5504:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(float)
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5498:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long unsigned int)
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5492:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long int)
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5486:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long unsigned int)
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5481:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long int)
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5475:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(unsigned int)
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5470:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(int)
   to_string(int __val)
   ^~~~~~~~~
binacpp.cpp:926:43: error: call of overloaded ‘to_string(double&)’ is ambiguous
   post_data.append( to_string( icebergQty ) );
                                           ^
In file included from binacpp.cpp:16:0:
binacpp_utils.h:28:15: note: candidate: std::__cxx11::string to_string(const T&) [with T = double; std::__cxx11::string = std::__cxx11::basic_string<char>]
 inline string to_string (const T& t)
               ^~~~~~~~~
binacpp_utils.h:36:20: note: candidate: std::__cxx11::string to_string(double)
 static std::string to_string(double val)
                    ^~~~~~~~~
In file included from /usr/include/c++/6/string:52:0,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from binacpp.h:19,
                 from binacpp.cpp:14:
/usr/include/c++/6/bits/basic_string.h:5522:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long double)
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5513:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(double)
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5504:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(float)
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5498:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long unsigned int)
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5492:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long int)
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5486:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long unsigned int)
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5481:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long int)
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5475:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(unsigned int)
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5470:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(int)
   to_string(int __val)
   ^~~~~~~~~
binacpp.cpp: In static member function ‘static void BinaCPP::withdraw(const char*, const char*, const char*, double, const char*, long int, Json::Value&)’:
binacpp.cpp:1384:38: error: call of overloaded ‘to_string(double&)’ is ambiguous
  post_data.append( to_string( amount ));
                                      ^
In file included from binacpp.cpp:16:0:
binacpp_utils.h:28:15: note: candidate: std::__cxx11::string to_string(const T&) [with T = double; std::__cxx11::string = std::__cxx11::basic_string<char>]
 inline string to_string (const T& t)
               ^~~~~~~~~
binacpp_utils.h:36:20: note: candidate: std::__cxx11::string to_string(double)
 static std::string to_string(double val)
                    ^~~~~~~~~
In file included from /usr/include/c++/6/string:52:0,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from binacpp.h:19,
                 from binacpp.cpp:14:
/usr/include/c++/6/bits/basic_string.h:5522:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long double)
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5513:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(double)
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5504:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(float)
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5498:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long unsigned int)
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5492:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long long int)
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5486:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long unsigned int)
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5481:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(long int)
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5475:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(unsigned int)
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/6/bits/basic_string.h:5470:3: note: candidate: std::__cxx11::string std::__cxx11::to_string(int)
   to_string(int __val)
   ^~~~~~~~~
Makefile:38: recipe for target '../lib/libbinacpp/lib/binacpp.o' failed
make: *** [../lib/libbinacpp/lib/binacpp.o] Error 1

现在错误列表更长了，但我尝试捕获终端错误的第一部分和最后一部分。

我尝试使用以下代码对其进行修补：

#include <string>   
#include <sstream>

namespace patch
{ 
    template < typename T > std::string to_string( const T& n )
    {   
        std::ostringstream stm ;
        stm<<n ;
        return stm.str() ;

    }
}

我在另一个问题中读到，这将在更换每个问题时解决问题

 to_string()

与

patch::to_string()

我试过了，结果完全一样（实际上截图是编辑后的）

我要使用的API可以在这里下载：https://github.com/binance-exchange/binacpp

就像我说的，我正在使用带有 rasbian 的树莓派。

和代码块。

提前感谢广告

【问题讨论】：

  • "终端的第一张截图" 不要截图终端 - 复制粘贴文本。
  • using namespace std; 里面有namespace patch'
  • 请编辑您的问题以包含minimal reproducible example
  • 您投了反对票，因为您发布了屏幕截图而不是文本 MCVE。真的很遗憾，否则这是一个公平的问题。
  • 小提示：下次你是新人时，locate & read the rules first。

标签： c++ shared-libraries


【解决方案1】：

正如错误消息所说，问题在于调用不明确。不会，除非the binacpp_utils.h file 在全局范围内包含它自己的to_string 模板，并且 有一个using namespace std 语句。这些都是破坏 C++11 工具链构建的严重错误。

您应该向库的开发人员提出问题。

与此同时，全局命名空间已被破坏，但您仍然可以在自己的代码中显式引用 std::to_string。

【讨论】：

  • 这只是.. 糟糕。在提出的问题中，OP 应链接到 this。很好的发现
  • 所以我应该只删除 using namespace 并且需要在每个 std 函数之前获取一个 std:: ？
  • @AlconDivino：库的作者应该在他们的头文件中这样做，是的。将 binacpp 代码放在自己的命名空间中也很友好。
  • 感谢您的回答：D
  • @AlconDivino：不客气！
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