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  • list and explanations of ways to boost this router's signal strength? [closed]

    - by barlop
    Possible Duplicates: Improve Wireless Signal How to get wireless coverage over my whole house? What's the best way to increase the range of my 802.11g router? The back of my house doesn't have WiFi Signal I'm interested in ways that are both specific to certain routers, and generic. When I say generic, I don't necessarily mean a one way that works for many.. but it can also be a generic answer, so mentioning solutions for different situations. So not just the one router I mention. Explanations are important, as well as all the ways. One i'm particularly interested in boosting the strength of is this wireless router/modem Netgear VMDG280 maybe anywhere in a big house with three floors, maybe from the garden.

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  • Installing PySide - OSX

    - by jeremynealbrown
    Anyone had success installing and using PySide on OSX? I am following the install instructions on the PySide site, though I'm running into issues building the API Extractor. I run cmake on the CMakeLists.txt file inside the api extractor dir and: This error is thrown- CMake Error at /Applications/CMake 2.8-0.app/Contents/share/cmake-2.8/Modules/FindBoost.cmake:894 (message): Unable to find the requested Boost libraries. Unable to find the Boost header files. Please set BOOST_ROOT to the root directory containing Boost or BOOST_INCLUDEDIR to the directory containing Boost's headers. Call Stack (most recent call first): CMakeLists.txt:5 (find_package) I am new to building source w/ cmake and I'm not event really sure what Boost is. Any light you might shed on the set up process would be great. Thanks

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  • Singleton code linker errors in vc 9.0. Runs fine in linux compiled with gcc

    - by user306560
    I have a simple logger that is implemented as a singleton. It works like i want when I compile and run it with g++ in linux but when I compile in Visual Studio 9.0 with vc++ I get the following errors. Is there a way to fix this? I don't mind changing the logger class around, but I would like to avoid changing how it is called. 1>Linking... 1>loggerTest.obj : error LNK2005: "public: static class Logger * __cdecl Logger::getInstance(void)" (?getInstance@Logger@@SAPAV1@XZ) already defined in Logger.obj 1>loggerTest.obj : error LNK2005: "public: void __thiscall Logger::log(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?log@Logger@@QAEXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) already defined in Logger.obj 1>loggerTest.obj : error LNK2005: "public: void __thiscall Logger::closeLog(void)" (?closeLog@Logger@@QAEXXZ) already defined in Logger.obj 1>loggerTest.obj : error LNK2005: "private: static class Logger * Logger::_instance" (?_instance@Logger@@0PAV1@A) already defined in Logger.obj 1>Logger.obj : error LNK2001: unresolved external symbol "private: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > Logger::_path" (?_path@Logger@@0V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@A) 1>loggerTest.obj : error LNK2001: unresolved external symbol "private: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > Logger::_path" (?_path@Logger@@0V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@A) 1>Logger.obj : error LNK2001: unresolved external symbol "private: static class boost::mutex Logger::_mutex" (?_mutex@Logger@@0Vmutex@boost@@A) 1>loggerTest.obj : error LNK2001: unresolved external symbol "private: static class boost::mutex Logger::_mutex" (?_mutex@Logger@@0Vmutex@boost@@A) 1>Logger.obj : error LNK2001: unresolved external symbol "private: static class std::basic_ofstream<char,struct std::char_traits<char> > Logger::_log" (?_log@Logger@@0V?$basic_ofstream@DU?$char_traits@D@std@@@std@@A) 1>loggerTest.obj : error LNK2001: unresolved external symbol "private: static class std::basic_ofstream<char,struct std::char_traits<char> > Logger::_log" (?_log@Logger@@0V?$basic_ofstream@DU?$char_traits@D@std@@@std@@A) The code, three files Logger.h Logger.cpp test.cpp #ifndef __LOGGER_CPP__ #define __LOGGER_CPP__ #include "Logger.h" Logger* Logger::_instance = 0; //string Logger::_path = "log"; //ofstream Logger::_log; //boost::mutex Logger::_mutex; Logger* Logger::getInstance(){ { boost::mutex::scoped_lock lock(_mutex); if(_instance == 0) { _instance = new Logger; _path = "log"; } } //mutex return _instance; } void Logger::log(const std::string& msg){ { boost::mutex::scoped_lock lock(_mutex); if(!_log.is_open()){ _log.open(_path.c_str()); } if(_log.is_open()){ _log << msg.c_str() << std::endl; } } } void Logger::closeLog(){ Logger::_log.close(); } #endif ` ... #ifndef __LOGGER_H__ #define __LOGGER_H__ #include <iostream> #include <string> #include <fstream> #include <boost/thread/mutex.hpp> #include <boost/thread.hpp> using namespace std; class Logger { public: static Logger* getInstance(); void log(const std::string& msg); void closeLog(); protected: Logger(){} private: static Logger* _instance; static string _path; static bool _logOpen; static ofstream _log; static boost::mutex _mutex; //check mutable }; #endif test.cpp ` #include <iostream> #include "Logger.cpp" using namespace std; int main(int argc, char *argv[]) { Logger* log = Logger::getInstance(); log->log("hello world\n"); return 0; }

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  • How to use autoconf with C++0x features

    - by themis
    What are the best practices for using autoconf in conjunction with shared_ptr and other TR1/BOOST C++0x templates so as to maximize portability and maintainability? With autoconf I can determine whether shared_ptr is available as std::tr1::shared_ptr and/or boost::shared_ptr. Given that the same feature has two different names, I have the following questions: In the code, how should shared_ptr be referenced? Should std::tr1::shared_ptr be preferred over boost::shared_ptr? For the first, the code is currently using preprocessor conditionals allowing non-qualified references to shared_ptr, a la #if HAVE_STD_TR1_SHARED_PTR using std::tr1::shared_ptr; #elif HAVE_BOOST_SHARED_PTR using boost::shared_ptr; #else #error "No definition for shared_ptr found" #endif Second, the code uses std::tr1:: over boost:: to minimize dependencies on external libraries (even if the the libraries are widely used). Are these two solutions common? Are there better ones?

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  • LLVM-3.1 libLLVMSupport.a undefined reference to `dladdr'

    - by user91387
    I'm trying to compile using the llvm-3.1 package. I'm running 12.04 x64 (3.2.0-26 kernel) && 12.10 (3.5.0-4) x64 backported llvm-3.1 from quantal, then debian experimental. Next I tried 12.10 with the native ubuntu llvm-3.1 package; this failed as well. user@system:/tmp/llvm-test# make compiling cpp yacc file: decaf-llvm.y output file: decaf-llvm bison -b decaf-llvm -d decaf-llvm.y /bin/mv -f decaf-llvm.tab.c decaf-llvm.tab.cc flex -odecaf-llvm.lex.cc decaf-llvm.lex g++ -o ./decaf-llvm decaf-llvm.tab.cc decaf-llvm.lex.cc decaf-stdlib.c `llvm-config --cppflags --ldflags --libs core jit native` -ly -ll /usr/lib/llvm-3.1/lib/libLLVMSupport.a(Signals.o): In function `PrintStackTrace(void*)': (.text+0x6c): undefined reference to `dladdr' /usr/lib/llvm-3.1/lib/libLLVMSupport.a(Signals.o): In function `PrintStackTrace(void*)': (.text+0x18f): undefined reference to `dladdr' collect2: error: ld returned 1 exit status make: *** [decaf-llvm] Error 1 I know the code works as I've run it in centos fine using llvm-3.1-6.fc18(rpm) Google was a bit helpful with this: "On some systems, incluning Ubuntu 11.10, linking may fail with message that libLLVMSupport.a in function PrintStackTrace(void*) has undefined reference to dladdr." "Workaround is to compile LLVM with cmake specifying the following variable: -DCMAKE_EXE_LINKER_FLAGS=-ldl" http://svn.dsource.org/projects/bindings/trunk/llvm-3.0/Readme I double checked y ldflags and everything seems ok. user@system:/llvm-config --ldflags -L/usr/lib/llvm-3.1/lib -lpthread -lffi -ldl -lm I'm unclear of what to do next; any suggestions?

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  • Is this too much code for a header only library?

    - by Billy ONeal
    It seems like I had to inline quite a bit of code here. I'm wondering if it's bad design practice to leave this entirely in a header file like this: #pragma once #include <string> #include <boost/noncopyable.hpp> #include <boost/make_shared.hpp> #include <boost/iterator/iterator_facade.hpp> #include <Windows.h> #include "../Exception.hpp" namespace WindowsAPI { namespace FileSystem { class FileData; struct AllResults; struct FilesOnly; template <typename Filter_T = AllResults> class DirectoryIterator; namespace detail { class DirectoryIteratorImpl : public boost::noncopyable { WIN32_FIND_DATAW currentData; HANDLE hFind; std::wstring root; public: inline DirectoryIteratorImpl(); inline explicit DirectoryIteratorImpl(const std::wstring& pathSpec); inline void increment(); inline bool equal(const DirectoryIteratorImpl& other) const; inline const std::wstring& GetPathRoot() const; inline const WIN32_FIND_DATAW& GetCurrentFindData() const; inline ~DirectoryIteratorImpl(); }; } class FileData //Serves as a proxy to the WIN32_FIND_DATA struture inside the iterator. { boost::shared_ptr<detail::DirectoryIteratorImpl> iteratorSource; public: FileData(const boost::shared_ptr<detail::DirectoryIteratorImpl>& parent) : iteratorSource(parent) {}; DWORD GetAttributes() const { return iteratorSource->GetCurrentFindData().dwFileAttributes; }; bool IsDirectory() const { return (GetAttributes() | FILE_ATTRIBUTE_DIRECTORY) != 0; }; bool IsFile() const { return !IsDirectory(); }; bool IsArchive() const { return (GetAttributes() | FILE_ATTRIBUTE_ARCHIVE) != 0; }; bool IsReadOnly() const { return (GetAttributes() | FILE_ATTRIBUTE_READONLY) != 0; }; unsigned __int64 GetSize() const { ULARGE_INTEGER intValue; intValue.LowPart = iteratorSource->GetCurrentFindData().nFileSizeLow; intValue.HighPart = iteratorSource->GetCurrentFindData().nFileSizeHigh; return intValue.QuadPart; }; std::wstring GetFolderPath() const { return iteratorSource->GetPathRoot(); }; std::wstring GetFileName() const { return iteratorSource->GetCurrentFindData().cFileName; }; std::wstring GetFullFileName() const { return GetFolderPath() + GetFileName(); }; std::wstring GetShortFileName() const { return iteratorSource->GetCurrentFindData().cAlternateFileName; }; FILETIME GetCreationTime() const { return iteratorSource->GetCurrentFindData().ftCreationTime; }; FILETIME GetLastAccessTime() const { return iteratorSource->GetCurrentFindData().ftLastAccessTime; }; FILETIME GetLastWriteTime() const { return iteratorSource->GetCurrentFindData().ftLastWriteTime; }; }; struct AllResults : public std::unary_function<const FileData&, bool> { bool operator()(const FileData&) { return true; }; }; struct FilesOnly : public std::unary_function<const FileData&, bool> { bool operator()(const FileData& arg) { return arg.IsFile(); }; }; template <typename Filter_T> class DirectoryIterator : public boost::iterator_facade<DirectoryIterator<Filter_T>, const FileData, std::input_iterator_tag> { friend class boost::iterator_core_access; boost::shared_ptr<detail::DirectoryIteratorImpl> impl; FileData current; Filter_T filter; void increment() { do { impl->increment(); } while (! filter(current)); }; bool equal(const DirectoryIterator& other) const { return impl->equal(*other.impl); }; const FileData& dereference() const { return current; }; public: DirectoryIterator(Filter_T functor = Filter_T()) : impl(boost::make_shared<detail::DirectoryIteratorImpl>()), current(impl), filter(functor) { }; explicit DirectoryIterator(const std::wstring& pathSpec, Filter_T functor = Filter_T()) : impl(boost::make_shared<detail::DirectoryIteratorImpl>(pathSpec)), current(impl), filter(functor) { }; }; namespace detail { DirectoryIteratorImpl::DirectoryIteratorImpl() : hFind(INVALID_HANDLE_VALUE) { } DirectoryIteratorImpl::DirectoryIteratorImpl(const std::wstring& pathSpec) { std::wstring::const_iterator lastSlash = std::find(pathSpec.rbegin(), pathSpec.rend(), L'\\').base(); root.assign(pathSpec.begin(), lastSlash); hFind = FindFirstFileW(pathSpec.c_str(), &currentData); if (hFind == INVALID_HANDLE_VALUE) WindowsApiException::ThrowFromLastError(); while (!wcscmp(currentData.cFileName, L".") || !wcscmp(currentData.cFileName, L"..")) { increment(); } } void DirectoryIteratorImpl::increment() { BOOL success = FindNextFile(hFind, &currentData); if (success) return; DWORD error = GetLastError(); if (error == ERROR_NO_MORE_FILES) { FindClose(hFind); hFind = INVALID_HANDLE_VALUE; } else { WindowsApiException::Throw(error); } } DirectoryIteratorImpl::~DirectoryIteratorImpl() { if (hFind != INVALID_HANDLE_VALUE) FindClose(hFind); } bool DirectoryIteratorImpl::equal(const DirectoryIteratorImpl& other) const { if (this == &other) return true; return hFind == other.hFind; } const std::wstring& DirectoryIteratorImpl::GetPathRoot() const { return root; } const WIN32_FIND_DATAW& DirectoryIteratorImpl::GetCurrentFindData() const { return currentData; } } }}

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  • Last Grid Column Not Auto Resizing With Grid

    - by photo_tom
    I'm having a problem with my TextBoxs not "Auto" resizing. I'm trying to create a form that behaves and looks like the Properties Editor in Visual Studio. What appears to be happening is that the third column is not expanding to fill all of the available remaining space in the grid. Image below is how my form looks on startup. The width of the textboxs is determined by the MinWidth setting on the third ColumnDefinition statement. Also, the Width is set to "*". With any other setting, the resizing done with the GridSplitter doesn't work correctly. <StackPanel Orientation="Vertical" VerticalAlignment="Top" x:Name="Stacker" Grid.IsSharedSizeScope="True"> <Expander x:Name="Expand" IsExpanded="True" Header="This is a test of a Second Panel" Width="{Binding Width, ElementName=Stacker}"> <Grid x:Name="EditGrid1" Margin="3" > <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" MinWidth="50" SharedSizeGroup="SharedSize1" /> <ColumnDefinition Width="Auto" SharedSizeGroup="SharedSize2" /> <ColumnDefinition Width="*" MinWidth="50" x:Name="ValueCol" /> </Grid.ColumnDefinitions> <GridSplitter Grid.Column="1" x:Name="ToolBoxSplitter1" Grid.Row="1" Grid.RowSpan="6" Panel.ZIndex="1" HorizontalAlignment="Stretch" ResizeBehavior="PreviousAndNext" Width="3"/> <TextBlock MaxHeight="40" Grid.Column="0" Grid.Row="1" Text="{x:Static lex:DoSomeThingView.Name}" /> <TextBlock MaxHeight="40" Grid.Column="0" Grid.Row="2" Text="{x:Static lex:DoSomeThingView.Address}" /> <TextBlock MaxHeight="40" Grid.Column="0" Grid.Row="3" Text="{x:Static lex:DoSomeThingView.Zip}" /> <TextBlock MaxHeight="40" Grid.Column="0" Grid.Row="4" Text="{x:Static lex:DoSomeThingView.NumberOfDoors}" TextTrimming="CharacterEllipsis" Grid.IsSharedSizeScope="True" /> <TextBlock MaxHeight="40" Grid.Column="0" Grid.Row="5" Text="{x:Static lex:DoSomeThingView.DoubleNumber}" /> <TextBox Grid.Column="2" Grid.Row="1" x:Name="UserName1" MaxHeight="50" TextWrapping="Wrap" VerticalScrollBarVisibility="Auto" SpellCheck.IsEnabled="True" /> <TextBox Grid.Column="2" Grid.Row="2" x:Name="Address1" /> <TextBox Grid.Column="2" Grid.Row="3" x:Name="Zip1" /> <TextBox Grid.Column="2" Grid.Row="4" x:Name="NumberOfDoors1" /> <TextBox Grid.Column="2" Grid.Row="5" x:Name="DoubleNumber1" /> </Grid> </Expander> </StackPanel> Any suggestions on how to correct this?

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  • Languages like Tcl that have configurable syntax?

    - by boost
    I'm looking for a language that will let me do what I could do with Clipper years ago, and which I can do with Tcl, namely add functionality in a way other than just adding functions. For example in Clipper/(x)Harbour there are commands #command, #translate, #xcommand and #xtranslate that allow things like this: #xcommand REPEAT; => DO WHILE .T. #xcommand UNTIL <cond>; => IF (<cond>); ;EXIT; ;ENDIF; ;ENDDO LOCAL n := 1 REPEAT n := n + 1 UNTIL n > 100 Similarly, in Tcl I'm doing proc process_range {_for_ project _from_ dat1 _to_ dat2 _by_ slice} { set fromDate [clock scan $dat1] set toDate [clock scan $dat2] if {$slice eq "day"} then {set incrementor [expr 24 * 60]} if {$slice eq "hour"} then {set incrementor 60} set method DateRange puts "Scanning from [clock format $fromDate -format "%c"] to [clock format $toDate -format "%c"] by $slice" for {set dateCursor $fromDate} {$dateCursor <= $toDate} {set dateCursor [clock add $dateCursor $incrementor minutes]} { # ... } } process_range for "client" from "2013-10-18 00:00" to "2013-10-20 23:59" by day Are there any other languages that permit this kind of, almost COBOL-esque, syntax modification? If you're wondering why I'm asking, it's for setting up stuff so that others with a not-as-geeky-as-I-am skillset can declare processing tasks.

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  • What's the canonical way to acknowledge many FOSS sources in a single project?

    - by boost
    I have a project which uses a large number of LGPL, Artistic and other open-source licensed libraries. What's the canonical (i.e. the "standard") way of acknowledging multiple sources in a single project download? Also, some of the sources I've used are from sites where using the code is okay, but publishing the source isn't. What's the usual manner of attribution in that case, and the usual manner of making the source available in an open-source project?

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  • What's the best way to acknowledge many FOSS sources in a single project?

    - by boost
    I have a project which uses a large number of LGPL, Artistic and other open-source licensed libraries. What's the canonical (i.e. the "standard") way of acknowledging multiple sources in a single project download? Also, some of the sources I've used are from sites where using the code is okay, but publishing the source isn't. What's the usual manner of attribution in that case, and the usual manner of making the source available in an open-source project?

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  • avoiding enums as interface identifiers c++ OOP

    - by AlasdairC
    Hi I'm working on a plugin framework using dynamic loaded shared libraries which is based on Eclipse's (and probally other's) extension-point model. All plugins share similar properties (name, id, version etc) and each plugin could in theory satisfy any extension-point. The actual plugin (ie Dll) handling is managed by another library, all I am doing really is managing collections of interfaces for the application. I started by using an enum PluginType to distinguish the different interfaces, but I have quickly realised that using template functions made the code far cleaner and would leave the grunt work up to the compiler, rather than forcing me to use lots of switch {...} statements. The only issue is where I need to specify like functionality for class members - most obvious example is the default plugin which provides a particular interface. A Settings class handles all settings, including the default plugin for an interface. ie Skin newSkin = settings.GetDefault<ISkin>(); How do I store the default ISkin in a container without resorting to some other means of identifying the interface? As I mentioned above, I currently use a std::map<PluginType, IPlugin> Settings::defaults member to achieve this (where IPlugin is an abstract base class which all plugins derive from. I can then dynamic_cast to the desired interface when required, but this really smells of bad design to me and introduces more harm than good I think. would welcome any tips edit: here's an example of the current use of default plugins typedef boost::shared_ptr<ISkin> Skin; typedef boost::shared_ptr<IPlugin> Plugin; enum PluginType { skin, ..., ... } class Settings { public: void SetDefault(const PluginType type, boost::shared_ptr<IPlugin> plugin) { m_default[type] = plugin; } boost::shared_ptr<IPlugin> GetDefault(const PluginType type) { return m_default[type]; } private: std::map<PluginType, boost::shared_ptr<IPlugin> m_default; }; SkinManager::Initialize() { Plugin thedefault = g_settings.GetDefault(skinplugin); Skin defaultskin = boost::dynamic_pointer_cast<ISkin>(theskin); defaultskin->Initialize(); } I would much rather call the getdefault as the following, with automatic casting to the derived class. However I need to specialize for every class type. template<> Skin Settings::GetDefault<ISkin>() { return boost::dynamic_pointer_cast<ISkin>(m_default(skin)); }

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  • VLC volume only to 200%?

    - by Tomas
    According to this comment it seems that VLC could boost the audio volume up to 800% in the past versions. Today I installed VLC multimedia player version 2.0.5 and it is capable only to boost up to 200%! This is not much, considering that some youtube videos are very quiet. This is what I need VLC for - to boost up volume for quiet youtube videos. So, where's the problem? Was it actually 800% in the past? Did VLC really limit this from former 800% to current 200%? Is it possible to somehow achieve more boost with VLC? Or with other software? I am using Windows 7.

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  • Returning a flexible datatype from a C++ function

    - by GavinH
    I'm developing for a legacy C++ application which uses ODBC for it's data access. Coming from a C# background, I really miss the ADO style of data access. I'm writing a wrapper (because we can't actually use ADO) to make our data access less painful. This means no char arrays, no manual text blob streaming, and no declaritive column binding. I'm struggling with how to store / return data values. In C# at least, you can declare an object and cast it to whatever (as long as the type is convertable). My current C++ solution is to use boost::any to store the data value in a custom DataColumnValue object. This class has conversion and assignment operators to the various types used in our app (more than 10). There's a bit of complexity here because if you store an int in the boost::any and try to boost::any_cast<long> you get a boost::bad_any_cast. Client objects shouldn't have to know how the value is stored internally. Does anyone have any experience trying to store / return values whose types are only known at runtime? Is there a better / cleaner way?

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  • Access USB devices through Delphi in Windows XP standard

    - by Lex Dean
    I have been studding this subject big time and got some code together big time Do not go near Jan Axelson's Lakeview Research its crap I'm telling you I found a jedi project not completed on the INtel web site that was a lot better. and much reading has opened doors to me I'm in desperate need for a registry reader that reads with out using TRegistry or the windows.pas call to find a registry key because this XP(+) call has a windows bug when calling HKEY_LOCAL_MACHINE root directory I'm using Delphi 4 that also does not have TBrkApart object if I had that object I can make my own registry access object or some one may know of an object Can any Some one one help please J Lex Dean email:- lexdeanair at hotmail.com

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  • multi_index composite_key replace with iterator

    - by Rohit
    Is there anyway to loop through an index in a boost::multi_index and perform a replace? #include <iostream> #include <string> #include <boost/multi_index_container.hpp> #include <boost/multi_index/composite_key.hpp> #include <boost/multi_index/member.hpp> #include <boost/multi_index/ordered_index.hpp> using namespace boost::multi_index; using namespace std; struct name_record { public: name_record(string given_name_,string family_name_,string other_name_) { given_name=given_name_; family_name=family_name_; other_name=other_name_; } string given_name; string family_name; string other_name; string get_name() const { return given_name + " " + family_name + " " + other_name; } void setnew(string chg) { given_name = given_name + chg; family_name = family_name + chg; } }; struct NameIndex{}; typedef multi_index_container< name_record, indexed_by< ordered_non_unique< tag<NameIndex>, composite_key < name_record, BOOST_MULTI_INDEX_MEMBER(name_record,string, name_record::given_name), BOOST_MULTI_INDEX_MEMBER(name_record,string, name_record::family_name) > > > > name_record_set; typedef boost::multi_index::index<name_record_set,NameIndex>::type::iterator IteratorType; typedef boost::multi_index::index<name_record_set,NameIndex>::type NameIndexType; void printContainer(name_record_set & ns) { cout << endl << "PrintContainer" << endl << "-------------" << endl; IteratorType it1 = ns.begin(); IteratorType it2 = ns.end (); while (it1 != it2) { cout<<it1->get_name()<<endl; it1++; } cout << "--------------" << endl << endl; } void modifyContainer(name_record_set & ns) { cout << endl << "ModifyContainer" << endl << "-------------" << endl; IteratorType it3; IteratorType it4; NameIndexType & idx1 = ns.get<NameIndex>(); IteratorType it1 = idx1.begin(); IteratorType it2 = idx1.end(); while (it1 != it2) { cout<<it1->get_name()<<endl; name_record nr = *it1; nr.setnew("_CHG"); bool res = idx1.replace(it1,nr); cout << "result is: " << res << endl; it1++; } cout << "--------------" << endl << endl; } int main() { name_record_set ns; ns.insert( name_record("Joe","Smith","ENTRY1") ); ns.insert( name_record("Robert","Brown","ENTRY2") ); ns.insert( name_record("Robert","Nightingale","ENTRY3") ); ns.insert( name_record("Marc","Tuxedo","ENTRY4") ); printContainer (ns); modifyContainer (ns); printContainer (ns); return 0; } PrintContainer ------------- Joe Smith ENTRY1 Marc Tuxedo ENTRY4 Robert Brown ENTRY2 Robert Nightingale ENTRY3 -------------- ModifyContainer ------------- Joe Smith ENTRY1 result is: 1 Marc Tuxedo ENTRY4 result is: 1 Robert Brown ENTRY2 result is: 1 -------------- PrintContainer ------------- Joe_CHG Smith_CHG ENTRY1 Marc_CHG Tuxedo_CHG ENTRY4 Robert Nightingale ENTRY3 Robert_CHG Brown_CHG ENTRY2 --------------

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  • can you help me with 8068 project for Delphi .net please

    - by Lex Dean
    To find an Assembly programmer is very hard to help me I'm a established Delphi programmer that has an old copy of Delphi that is not .net And I have a *.dll that I'm converting into Delphi code for .net I'm on a big learning curve hear as i know little of .net yet. I've just got a computer with .net today!!!!!! I've run the *.dll through a dissembler and started putting jump links in as writing in Delphi assembly you do not do any addressing, just reference links. The file has fixed string structures (i think C++) ASCII & ANSI strings 1/ I do not know how to identify how the code references these structures 2/ and I do not know were the functions begin and what shape they look like The code is free for any one to look at their is not many functions in it. but I have to email it as stack over flow will not allow me to display it. Can you tech me or can you refer me to a friend you may know please to tech me lexdeanair at hotmail.com Best regards, Lex Dean from New Zealand I do not wish to pester any one

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  • Dynamic character animation - Using the physics engine or not

    - by Lex Webb
    I'm planning on building a dynamic reactant animation engine for the characters in my 2D Game. I have already built templates for a skeleton based animation system using key frames and interpolation to specify a limbs position at any given moment in time. I am using Farseer physics (an extension of Box2D) in Monogame/XNA in C# My real question lies in how i go about tying this character animation into the physics engine. I have two options: Moving limbs using physics engine - applying a interpolated force to each limb (dynamic body) in order to attempt to get it to its position as donated by the skeleton animation. Moving limbs by simply changing the position of a fixed body - Updating the new position of each limb manually, attempting to take into account physics collisions. Then stepping the physics after the animation to allow for environment interaction. Each of these methods have their distinct advantages and disadvantages. Physics based movement Advantages: Possibly more natural/realistic movement Better interaction with game objects as force applying to objects colliding with characters would be calculated for me. No need to convert to dynamic bodies when reacting to projectiles/death/fighting. Disadvantages: Possible difficulty in calculating correct amount of force to move a limb a certain distance at a constant rate. Underlying character balance system would need to be created that would need to be robust enough to prevent characters falling over at the touch of a feather. Added code complexity and processing time for the above. Static Object movement Advantages: Easy to interpolate movement of limbs between game steps Moving limbs is as simple as applying a rotation to the skeleton bone. Greater control over limbs, wont need to worry about characters falling over as all animation would be pre-defined. Disadvantages: Possible unnatural movement (Depends entirely on my animation skills!) Bad physics collision reactions with physics engine (Dynamic bodies simply slide out of the way of static objects) Need to calculate collisions with physics objects and my limbs myself and apply directional forces to them. Hard to account for slopes/stairs/non standard planes when animating walking/running animations. Need to convert objects to dynamic when reacting to projectile/fighting/death physics objects. The Question! As you can see, i have thought about this extensively, i have also had Google into physics based animation and have found mostly dissertation papers! Which is filling me with sense that it may a lot more advanced than my mathematics skills. My question is mostly subjective based on my findings above/any experience you may have: Which of the above methods should i use when creating my game? I am willing to spend the time to get a physics solution working if you think it would be possible. In the end i want to provide the most satisfying experience for the gamer, as well as a robust and dynamic system i can use to animate pretty much anything i need.

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  • Humor in Documentation

    - by Lex Fridman
    Is a small amount of lighthearted wording or humor acceptable in source code documentation? For example, I have an algorithm that has a message hop around a graph (network) until its path forms a cycle. When this happens it is removed from the queue of the node it last resided on which removes it from memory. I write that in a comment, and finish the comment with "Rest in peace, little guy". That serves very little documenting purpose, but it cheers me up a bit, and I imagine it might cheer up other people I'm working with as they read through the code. Is this an acceptable practice, or should my in-code documentation resemble as much as possible the speeches of 2004 United States presidential candidate John Kerry? ;-)

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  • MonoGame not all letters being drawn with DrawString

    - by Lex Webb
    I'm currently making a dynamic user interface for my game and are setting up having text on my buttons. I'm having an odd issue where, when i use a specific piece of code to determine the text position, it will not render all of the text passed to DrawString. Even weirder, is if i insert another DrawString after this, drawing more text at a different place, different parts of the text will be drawn. The code for drawing my button with the text attached is: public override void Draw(SpriteBatch sb, GameTime gt) { sb.Draw(currentImage, GetRelativeRectangle(), Color.White); sb.DrawString(font, text, new Vector2(this.GetRelativeDrawOffset().X + this.Width / 2 - font.MeasureString(text).X / 2, this.GetRelativeDrawOffset().Y + this.Height / 2 - font.MeasureString(text).Y / 2), textColor); } The methods in the creation of the Vector2 simply get the draw position of the button. I'm then doing some calculation to center the text. This produces this when the text is set to 'Test': And when i enter this piece of code below the first DrawString: sb.DrawString(font, "test", new Vector2(500, 50), Color.Pink); I should mention that that grey square is being drawn in the same spritebatch, before the button and the text. Any ideas as to what could be causing this? I have a feeling it may be due to draw order, but i have no idea how to control that.

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  • Humor in Documentation

    - by Lex Fridman
    Is a small amount of lighthearted wording or humor acceptable in source code documentation? For example, I have an algorithm that has a message hop around a graph (network) until its path forms a cycle. When this happens it is removed from the queue of the node it last resided on which removes it from memory. I write that in a comment, and finish the comment with "Rest in peace, little guy". That serves very little documenting purpose, but it cheers me up a bit, and I imagine it might cheer up other people I'm working with as they read through the code. Is this an acceptable practice, or should my in-code documentation resemble as much as possible the speeches of 2004 presidential candidate John Kerry? ;-)

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  • Is possible to write too many asserts?

    - by Lex Fridman
    I am a big fan of writing assert checks in C++ code as a way to catch cases during development that cannot possibly happen but do happen because of logic bugs in my program. This is a good practice in general. However, I've noticed that some functions I write (which are part of a complex class) have 5+ asserts which feels like it could potentially be a bad programming practice, in terms of readability and maintainability. I think it's still great, as each one requires me to think about pre- and post-conditions of functions and they really do help catch bugs. However, I just wanted to put this out there to ask if there is a better paradigms for catching logic errors in cases when a large number of checks is necessary.

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  • Whats the Best Way to boost my StackOverflow score? [closed]

    - by 5arx
    I just joined stack overflow and am finding it very useful. But getting my score up to the level where I can actually do things like answer questions, mark people's answers up or down and so on is proving to be painfully slow. Can any of you SO hacks and experts furnish me with tips to get my score climbing ...? Thanks, 5arx

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  • Does Ubuntu ever push new versions of GCC into the package repository between releases?

    - by Lex Fridman
    Current version of GCC in Ubuntu 11.04 is 4.5.2. For certain C++0x features, I need GCC version 4.6, but would like to avoid compiling from source. Is there hope that Ubuntu will update GCC in the package repository before the next release in October (11.10). This question asks a similar thing except for an earlier version of Ubuntu and GCC. A second part of the question, if the answer is "no" to the first, then can I hope to see it appear in Ubuntu's unstable repository?

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  • Standalone URL 301 Redirect Manager [on hold]

    - by Lex
    I'm looking for a script with a simple interface that helps me manage a large list of 301 redirects of the form: http://example.com/short ---> http://example.com/long-and-descriptive For example the following Wordpress plugin does this job, but it seems excessive to install Wordpress just for this one simple functionality. It looks like my question is similar to this closed question, but hopefully rephrased in such a way that makes it more relevant and "constructive".

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