Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++98

Compiler(s):

G++ 4.9.2

Libraries used:

STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppStdUniqueExample3/CppStdUniqueExample3.pro


include(../../ConsoleApplication.pri) #Or use the code below

# QT += core

# QT += gui

# greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

# CONFIG   += console

# CONFIG   -= app_bundle

# TEMPLATE = app

# CONFIG(release, debug|release) {

#   DEFINES += NDEBUG NTRACE_BILDERBIKKEL

# }

# QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++

# unix {

#   QMAKE_CXXFLAGS += -Werror

# }



include(../../Libraries/Boost.pri) #Or use the code below

# win32 {

#   INCLUDEPATH += \

#     ../../Libraries/boost_1_54_0

# }



SOURCES += main.cpp

./CppStdUniqueExample3/main.cpp


#include <algorithm>

#include <cassert>

#include <vector>



#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Weffc++"

#pragma GCC diagnostic ignored "-Wunused-local-typedefs"

#include <boost/shared_ptr.hpp>

#pragma GCC diagnostic pop



const std::vector<boost::shared_ptr<int>> Create()

{

  const boost::shared_ptr<int> a { new int(1) };

  const boost::shared_ptr<int> b { new int(2) };

  std::vector<boost::shared_ptr<int>> v {

    a,b,a,a,b,b,a,a,a,a,b,b,b,b

  };

  return v;

}





int main()

{

  {

    std::vector<boost::shared_ptr<int>> v { Create() };

    assert(std::count(v.begin(),v.end(),nullptr) == 0);

    std::sort(v.begin(),v.end());

    assert(std::count(v.begin(),v.end(),nullptr) == 0);

    v.erase(std::unique(v.begin(),v.end()),v.end());

    assert(std::count(v.begin(),v.end(),nullptr) == 0);

    assert(v.size() == 2);

  }

  {

    std::vector<boost::shared_ptr<int>> v { Create() };

    assert(std::count(std::begin(v),std::end(v),nullptr) == 0);

    std::sort(std::begin(v),std::end(v));

    assert(std::count(std::begin(v),std::end(v),nullptr) == 0);

    v.erase(std::unique(std::begin(v),std::end(v)),std::end(v));

    assert(std::count(std::begin(v),std::end(v),nullptr) == 0);

    assert(v.size() == 2);

  }

  {

    std::vector<boost::shared_ptr<int>> v { Create() };

    assert(std::count(std::begin(v),std::end(v),nullptr) == 0);

    std::sort(std::begin(v),std::end(v));

    assert(std::count(std::begin(v),std::end(v),nullptr) == 0);



    std::vector<boost::shared_ptr<int>> w;

    std::unique_copy(std::begin(v),std::end(v),std::back_inserter(w));

    assert(std::count(std::begin(w),std::end(w),nullptr) == 0);

    assert(w.size() == 2);

  }

}

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(C++) StdUniqueExample3

Technical facts

Qt project file: ./CppStdUniqueExample3/CppStdUniqueExample3.pro

./CppStdUniqueExample3/main.cpp