Method IsNumber

src/UtilityLib/Utility.cpp:283–294

}

bool CUtility::IsNumber(const std::wstring& str)
{
    return !str.empty()
           && std::find_if(
                  str.begin(),
                  str.end(),
                  [](wchar_t c)
                  {
                      return !std::isdigit(c);
                  })
                  == str.end();
}

auto CUtility::GetNumber(const std::wstring& str) -> std::optional<int>
{