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Solution for Day1 first exercise #2

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ebea945
Solution for Day1 first exercise
Nov 12, 2018
520d59a
Reverted projects to original commit
lkrizan Nov 12, 2018
def3555
Added wrapper for function imported from dll
lkrizan Nov 12, 2018
e635742
Removed redundant try-catch block
lkrizan Nov 12, 2018
f5cb42d
Switched C-style cast to reinterpret_cast
Nov 13, 2018
30d55c6
Finished second exercise
Nov 13, 2018
4716e53
Switched while loop to std::for_each
Nov 13, 2018
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51 changes: 51 additions & 0 deletions exercise/01/app/Source.cpp
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#include <iostream>
#include "../lib/public.h" // public.h from static library
#include "../dll2/public.h" // public.h from implib dll
#include <Windows.h>

struct function_wrapper
{
function_wrapper(std::string const& path, std::string const& function)
{
m_handle = LoadLibraryA(path.c_str());
if (nullptr == m_handle)
{
throw std::invalid_argument("invalid path to target dll");
}
m_function = reinterpret_cast<function_t>(::GetProcAddress(m_handle, function.c_str()));
if (nullptr == m_function)
{
throw std::invalid_argument("invalid function argument");
}
}

~function_wrapper()
{
::FreeLibrary(m_handle);
}

double operator()(const int arg) const
{
return m_function(arg);
}

private:
typedef double(*function_t)(int input);
function_t m_function;
HMODULE m_handle;
};

namespace dynamic_lib
{
const function_wrapper get_value("dynamic_library.dll", "get_value");
}


int main()
{
std::cout << "Static library: " << static_lib::get_value(1) << std::endl;
std::cout << "Dynamic library without implib: " << dynamic_lib::get_value(1) << std::endl;
std::cout << "Dynamic library with implib: " << get_value(1) << std::endl;

return 0;
}
174 changes: 174 additions & 0 deletions exercise/01/app/app.vcxproj
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<Link>
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22 changes: 22 additions & 0 deletions exercise/01/app/app.vcxproj.filters
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