Re: Insert static array of struct in a vector

From:

Maxim Yegorushkin <maxim.yegorushkin@gmail.com>

Newsgroups:

comp.lang.c++

Date:

Fri, 31 Oct 2008 04:13:50 -0700 (PDT)

Message-ID:

<14f8127b-1270-4962-99d4-257f2403219b@v16g2000prc.googlegroups.com>

On Oct 31, 10:52 am, John Doe <mos...@anonymous.org> wrote:

Maxim Yegorushkin wrote:

On Oct 31, 10:37 am, John Doe <mos...@anonymous.org> wrote:

Hi,

I have a static array of struct defined like this :

CViewMgr::ViewInfo g_ViewInfo[] =
{
{ EMainView, ECreateOnce, =

IDR_MAINFRAME, RUNTIME_CLASS(CMainVie=
w),

NULL,0, 0 },
{ EWelcomeView, ECreateAndDestroy, =

IDR_MENU_OKCANCEL,

RUNTIME_CLASS(CWelcomeView), NULL,0, 0 },

};

I would like to put all these declarations in a vector how can I do it=

typedef std::vector<ViewInfo> ViewList;
ViewList viewList;

soemthing like :

for (int i = 0; i < _countof(g_ViewInfo); i++)
viewList.push_back(g_ViewInfo[i]);

But I am sure there is an easier way, maybe I should call reserve befo=

re ?

Try this:

    ViewList viewList(
          g_ViewInfo
        , g_ViewInfo + sizeof g_ViewInfo / sizeof *g_ViewInfo
        );

--
Max

So I suppose it means I have to put init in constructor because my list
is a variable member.

CViewMgr::CViewMgr():
m_viewList(g_ViewInfo, g_ViewInfo + _countof(g_ViewInfo))
{

}

This syntax invokes the constructor of the vector which accepts two
iterators.

There is also vector::insert() which accepts iterators. It is
perfectly fine to append to an empty vector as well:

    viewList.insert(
          viewList.end()
        , g_ViewInfo
        , g_ViewInfo + _countof(g_ViewInfo)
        );

--
Max

--
Max