- iOS/Objective-C 元类和类别
- objective-c - -1001 错误,当 NSURLSession 通过 httpproxy 和/etc/hosts
- java - 使用网络类获取 url 地址
- ios - 推送通知中不播放声音
当我将此代码段的最后一行添加到我的程序代码中时:
typedef std::set<Job> JobSet;
typedef boost::shared_ptr<JobSet> JobSetPtr;
JobSetPtr jobs_;
jobs_->insert ( job ); // line 60
我收到这个错误:
g++-4.7 -o /home/kron/Software/Synchronizer/1.0/Main.o -c src/Main.cpp
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h: In instantiation of ‘bool std::less<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = Job]’:
/usr/include/c++/4.7/bits/stl_tree.h:1285:4: required from ‘std::pair<std::_Rb_tree_iterator<_Val>, bool> std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_insert_unique(const _Val&) [with _Key = Job; _Val = Job; _KeyOfValue = std::_Identity<Job>; _Compare = std::less<Job>; _Alloc = std::allocator<Job>]’
/usr/include/c++/4.7/bits/stl_set.h:415:29: required from ‘std::pair<typename std::_Rb_tree<_Key, _Key, std::_Identity<_Key>, _Compare, typename _Alloc::rebind<_Key>::other>::const_iterator, bool> std::set<_Key, _Compare, _Alloc>::insert(const value_type&) [with _Key = Job; _Compare = std::less<Job>; _Alloc = std::allocator<Job>; typename std::_Rb_tree<_Key, _Key, std::_Identity<_Key>, _Compare, typename _Alloc::rebind<_Key>::other>::const_iterator = std::_Rb_tree_const_iterator<Job>; std::set<_Key, _Compare, _Alloc>::value_type = Job]’
src/Configuration.hpp:60:27: required from here
/usr/include/c++/4.7/bits/stl_function.h:236:22: error: no match for ‘operator<’ in ‘__x < __y’
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: candidates are:
In file included from /usr/include/c++/4.7/bits/stl_algobase.h:65:0,
from /usr/include/c++/4.7/bits/char_traits.h:41,
from /usr/include/c++/4.7/ios:41,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_pair.h:218:5: note: template<class _T1, class _T2> bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
/usr/include/c++/4.7/bits/stl_pair.h:218:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::pair<_T1, _T2>’
In file included from /usr/include/c++/4.7/bits/stl_algobase.h:68:0,
from /usr/include/c++/4.7/bits/char_traits.h:41,
from /usr/include/c++/4.7/ios:41,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_iterator.h:299:5: note: template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
/usr/include/c++/4.7/bits/stl_iterator.h:299:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::reverse_iterator<_Iterator>’
In file included from /usr/include/c++/4.7/bits/stl_algobase.h:68:0,
from /usr/include/c++/4.7/bits/char_traits.h:41,
from /usr/include/c++/4.7/ios:41,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_iterator.h:349:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorR>&)
/usr/include/c++/4.7/bits/stl_iterator.h:349:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::reverse_iterator<_IteratorL>’
In file included from /usr/include/c++/4.7/string:54:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/basic_string.h:2566:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
/usr/include/c++/4.7/bits/basic_string.h:2566:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::basic_string<_CharT, _Traits, _Alloc>’
In file included from /usr/include/c++/4.7/string:54:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/basic_string.h:2578:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
/usr/include/c++/4.7/bits/basic_string.h:2578:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::basic_string<_CharT, _Traits, _Alloc>’
In file included from /usr/include/c++/4.7/string:54:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/basic_string.h:2590:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
/usr/include/c++/4.7/bits/basic_string.h:2590:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: mismatched types ‘const _CharT*’ and ‘Job’
In file included from /usr/include/c++/4.7/vector:65:0,
from src/Main.cpp:2:
/usr/include/c++/4.7/bits/stl_vector.h:1372:5: note: template<class _Tp, class _Alloc> bool std::operator<(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
/usr/include/c++/4.7/bits/stl_vector.h:1372:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::vector<_Tp, _Alloc>’
In file included from /usr/include/c++/4.7/set:60:0,
from src/Configuration.hpp:4,
from src/Main.cpp:5:
/usr/include/c++/4.7/bits/stl_tree.h:873:5: note: template<class _Key, class _Val, class _KeyOfValue, class _Compare, class _Alloc> bool std::operator<(const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&, const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&)
/usr/include/c++/4.7/bits/stl_tree.h:873:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>’
In file included from /usr/include/c++/4.7/set:61:0,
from src/Configuration.hpp:4,
from src/Main.cpp:5:
/usr/include/c++/4.7/bits/stl_set.h:721:5: note: template<class _Key, class _Compare, class _Alloc> bool std::operator<(const std::set<_Key, _Compare, _Alloc>&, const std::set<_Key, _Compare, _Alloc>&)
/usr/include/c++/4.7/bits/stl_set.h:721:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::set<_Key, _Compare, _Alloc>’
In file included from /usr/include/c++/4.7/set:62:0,
from src/Configuration.hpp:4,
from src/Main.cpp:5:
/usr/include/c++/4.7/bits/stl_multiset.h:702:5: note: template<class _Key, class _Compare, class _Alloc> bool std::operator<(const std::multiset<_Key, _Compare, _Alloc>&, const std::multiset<_Key, _Compare, _Alloc>&)
/usr/include/c++/4.7/bits/stl_multiset.h:702:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::multiset<_Key, _Compare, _Alloc>’
In file included from /usr/include/c++/4.7/list:64:0,
from /usr/include/boost/algorithm/string/std/list_traits.hpp:15,
from /usr/include/boost/algorithm/string/std_containers_traits.hpp:20,
from /usr/include/boost/algorithm/string.hpp:18,
from src/Configuration.hpp:9,
from src/Main.cpp:5:
/usr/include/c++/4.7/bits/stl_list.h:1659:5: note: template<class _Tp, class _Alloc> bool std::operator<(const std::list<_Tp, _Alloc>&, const std::list<_Tp, _Alloc>&)
/usr/include/c++/4.7/bits/stl_list.h:1659:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::list<_Tp, _Alloc>’
In file included from /usr/include/c++/4.7/deque:65:0,
from /usr/include/boost/algorithm/string/find_format.hpp:14,
from /usr/include/boost/algorithm/string/replace.hpp:22,
from /usr/include/boost/algorithm/string.hpp:25,
from src/Configuration.hpp:9,
from src/Main.cpp:5:
/usr/include/c++/4.7/bits/stl_deque.h:274:5: note: template<class _Tp, class _Ref, class _Ptr> bool std::operator<(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
/usr/include/c++/4.7/bits/stl_deque.h:274:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’
In file included from /usr/include/c++/4.7/deque:65:0,
from /usr/include/boost/algorithm/string/find_format.hpp:14,
from /usr/include/boost/algorithm/string/replace.hpp:22,
from /usr/include/boost/algorithm/string.hpp:25,
from src/Configuration.hpp:9,
from src/Main.cpp:5:
/usr/include/c++/4.7/bits/stl_deque.h:282:5: note: template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> bool std::operator<(const std::_Deque_iterator<_Tp, _RefL, _PtrL>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)
/usr/include/c++/4.7/bits/stl_deque.h:282:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::_Deque_iterator<_Tp, _RefL, _PtrL>’
In file included from /usr/include/c++/4.7/deque:65:0,
from /usr/include/boost/algorithm/string/find_format.hpp:14,
from /usr/include/boost/algorithm/string/replace.hpp:22,
from /usr/include/boost/algorithm/string.hpp:25,
from src/Configuration.hpp:9,
from src/Main.cpp:5:
/usr/include/c++/4.7/bits/stl_deque.h:1947:5: note: template<class _Tp, class _Alloc> bool std::operator<(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)
/usr/include/c++/4.7/bits/stl_deque.h:1947:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/4.7/string:50:0,
from /usr/include/c++/4.7/bits/locale_classes.h:42,
from /usr/include/c++/4.7/bits/ios_base.h:43,
from /usr/include/c++/4.7/ios:43,
from /usr/include/c++/4.7/ostream:40,
from /usr/include/c++/4.7/iostream:40,
from src/Main.cpp:1:
/usr/include/c++/4.7/bits/stl_function.h:236:22: note: ‘const Job’ is not derived from ‘const std::deque<_Tp, _Alloc>’
make: *** [/home/kron/Software/Synchronizer/1.0/Main.o] Error 1
是我的错吗?如果是,我做错了什么?如果没有,有人有同样的错误吗?
最佳答案
您似乎没有提供 <
的定义运算符比较两个 Job
类型的对象.
当您将对象插入到 std::set
中时,容器需要知道它应该插入项目的位置,为此它需要将要插入的对象与集合中已经存在的项目进行比较。为此,它使用 <
我猜你还没有提供的运营商。 std::set<Job>
根本不知道如何比较两个 Job
类型的对象.
所以你可以提供operator<
对于 Job
类(class)。
或者,或者,定义这个仿函数来比较 Job
对象:
struct JobComparer
{
bool operator()(Job const &j1, Job const &j2)
{
//compare j1 and j2 and return true or false
}
};
然后将其用作:
typedef std::set<Job, JobComparer> JobSet;
或者,您可以专攻 std::less
作为explained here .
你可以看到这个主题:
关于c++ - GCC-4.7 编译错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10155571/
是否有任何库或框架旨在促进从另一种成熟的编程语言中构建项目? 在 C++、java 等编程语言中指定逻辑、集合和复杂规则非常容易,但在 Makefile 中完成这些事情似乎是一场艰苦的战斗。我还没有深
我有这段代码可以用 clang 编译得很好(即使使用 -Weverything),但是 gcc 会发出错误。 #include #include #include using namespace
我有以下 block 头文件 BKE_mesh.h: /* Connectivity data */ typedef struct IndexNode { struct IndexNode *
我在我的一个项目中遇到了一个奇怪的问题。我的代码库依赖于一个外部库,其中包含一个名为 Dataset 的类. Dataset类私有(private)继承自 std::vector (其中 Sample
当使用 gcc、g++ 或 make 在终端中编译一个小型 C 或 C++ 项目时,我收到以下错误: /tmp/ccG1caGi.o: In function `main': main.c:(.tex
我正在尝试从 CVS 为 Windows 上的 Emacs 23.1.50 编译 CEDET,但在“第 6 步:打开 EDE...”时出现错误:“defvar:作为变量的符号值是无效的:cedet-m
我正在(重新)学习编程,我从 C 开始。我的 IDE(如果我可以这么说)是 Windows7 上的 cygwin(32 位)和 Visual-Studio 2010。我总是编译我用 gcc (cygw
我喜欢在模板类中使用本地类来执行类似“static if”的构造。但是我遇到了 gcc 4.8 不想编译我的代码的问题。但是 4.7 可以。 这个例子: #include #include #in
我有一个项目,必须仅使用 java 1.4 进行编译。但我计划使用mockito 编写一些单元测试。我想要一种在 pom 中指定的方法,以便 src/main/java 使用 jdk 1.4 编译,但
我想了解 PHP 编译过程是如何工作的。 假设我有一个名为funcs.php 的文件并且这个文件有三个函数,如果我include 或require 它,所有的在文件加载期间编译三个函数?或者源代码会被
编译工具链 我们写程序的时候用的都是集成开发环境 (IDE: Integrated Development Environment),集成开发环境可以极大地方便我们程序员编写程序,但是配置起来
当我编写一些 Scala 代码时,在尝试编译代码时收到一条奇怪的错误消息。我将代码分解为一个更简单的代码(从语义的角度来看这完全没有意义,但仍然显示了错误)。 scala> :paste // Ent
我正在编译一个 SCSS 文件,它似乎删除了我的评论。我可以使用什么命令来保留所有评论? >SASS input.scss output.css 我在 SCSS 中看到两种类型的注释。 // Comm
这是我的代码: #include typedef struct { const char *description; float value; int age; } swag
当您编译 grails war 时,我知道 .groovy 代码被编译为字节码类文件,但我不明白容器(例如 tomcat)如何在请求 GSP 时知道如何编译它们。容器了解 GSP 吗?安装在服务器上的
我正在努力将多个文件编译成一个通用程序。我收到一个错误: undefined reference to 'pi' 这是我的代码和 Makefile 的框架。我做错了什么?谢谢! 文件:calcPi.c
我尝试使用 LD_PRELOAD 来 Hook sprintf function ,所以我将打印到缓冲区的结果: #define _GNU_SOURCE #include #include int
我正在寻找最简单的方法来自动将 CoffeeScript 重新编译为 JS。 阅读documentation但仍然很难得到我想要的东西。 我需要它来监视文件夹 src/ 中的任何 *.coffee 文
我想使用定制waveformjs 。我发现this on SO但是,我不知道如何编译/安装波形来开始。我从 GitHub 克隆它并进行了更改,但是我不知道如何将其转换为 .js 文件。 最佳答案 为了
很难说出这里问的是什么。这个问题是含糊的、模糊的、不完整的、过于宽泛的或修辞性的,无法以目前的形式得到合理的回答。如需帮助澄清此问题以便重新打开它,visit the help center 。 已关
我是一名优秀的程序员,十分优秀!