(C++) TestLazy_init

ToolTestLazy_init is a tool to test the Lazy_init class.

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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++11

Compiler(s):

G++ 4.9.2

Libraries used:

Qt: version 5.4.1 (32 bit)
STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./ToolTestLazy_init/ToolTestLazy_init.pro


QT       += core

QT       -= gui

CONFIG   += console

CONFIG   -= app_bundle

TEMPLATE = app



INCLUDEPATH += ../../Classes/CppLazy_init



SOURCES += main.cpp



HEADERS += \

    ../../Classes/CppLazy_init/lazy_init.h



#

#

# Type of compile

#

#



CONFIG(release, debug|release) {

  DEFINES += NDEBUG NTRACE_BILDERBIKKEL

}



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



unix {

  QMAKE_CXXFLAGS += -Werror

}



#

#

# Boost

#

#



win32 {

  INCLUDEPATH += \

    ../../Libraries/boost_1_54_0

}

./ToolTestLazy_init/main.cpp


//---------------------------------------------------------------------------

/*

TestLazy_init. Tests the Lazy_init class.

Copyright (C) 2012 Richel Bilderbeek



This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 3 of the License, or

(at your option) any later version.



This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.



You should have received a copy of the GNU General Public License

along with this program. If not, see <http://www.gnu.org/licenses/>.

*/

//---------------------------------------------------------------------------

//From http://www.richelbilderbeek.nl/ToolTestLazy_init.htm

//---------------------------------------------------------------------------

#include <iostream>



#include "lazy_init.h"



struct W

{

  W() { std::cout << "W contructor\n"; }

  void f() const { std::cout << "I am W" << '\n'; }

};



struct X

{

  X(const int x) : m_x(x) { std::cout << "X contructor\n"; }

  void f() const { std::cout << m_x << '\n'; }

  const int m_x;

};



struct Y

{

  Y(const std::string& s) : m_s(s) { std::cout << "Y contructor\n"; }

  void f() const { std::cout << m_s << '\n'; }

  const std::string m_s;

};



struct Z

{

  Z(const std::string& s, const int i) : m_s(s), m_i(i) { std::cout << "Z contructor\n"; }

  void f() const { std::cout << m_s << m_i << '\n'; }

  const std::string m_s;

  const int m_i;

};



int main()

{

  std::cout << "Lazy construction\n";

  ribi::LazyInit0<W> w;

  ribi::LazyInit1<X,int> x(314);

  ribi::LazyInit1<Y,std::string> y("Hello World");

  ribi::LazyInit2<Z,std::string,int> z("Hell",0);

  std::cout << "Calling objects\n";

  z.Get().f();

  y.Get().f();

  x.Get().f();

  w.Get().f();

}



/* Screen output:



Lazy construction

Calling objects

Z contructor

Hell0

Y contructor

Hello World

X contructor

314

W contructor

I am W

Press <RETURN> to close this window...



*/

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