Re: unique value for map

From:
Scot T Brennecke <ScotB@Spamhater.MVPs.org>
Newsgroups:
microsoft.public.vc.stl
Date:
Mon, 21 Sep 2009 02:08:50 -0500
Message-ID:
<#WNYgpoOKHA.4580@TK2MSFTNGP06.phx.gbl>
Are you asking if you can make a linked list of maps? I'm confused. What do you mean "use a map in a linked list"?

Ashish wrote:

The question was about link list ot tree. The question was can we use a map
in link list as we'll allocate memory to each node in link list at run time.
Each node has a map pointer which can contains as many values as we want.
"Scot T Brennecke" <ScotB@Spamhater.MVPs.org> wrote in message
news:e8Ot6UcOKHA.1268@TK2MSFTNGP04.phx.gbl...

Yes, a map sounds perfect for this. So, what was the question about a
linked list? Just use a map.

ashish wrote:

thanks
i'm using tree not exactly link link.
suppose i create a window explorer type application which shows folders
in tree hierarchy and files under folder.
For folders i'm using tree. I'll use API functions to find folder/file.
So i need to allocate memory at run time. For each folder there may be
many files. For each Folder memory will alocated only once but for files
i need to allocate for each. If duplicate file then i need to search. To
avoid search i thought to use map.

All STL containers (and a lot of non-STL ones) would allow you to
insert unique values.

Please tell me some name.

Scot T Brennecke" <ScotB@Spamhater.MVPs.org> wrote in message
news:e1BdN%23UOKHA.4336@TK2MSFTNGP06.phx.gbl...

ashish wrote:

std::map allows to insert unique values(key), is there any other data
tyep which allows same.
can u use map in a link list, when allocate memory to link list i can
insert some values in map

I think you are asking for a linear container that enforces uniqueness
of inserted elements. However, is there a reason why you cannot just
use a map instead of a list? You can iterate a map.

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