Re: how to hard code a Link list

From:

Christopher Pisz <nospam@notanaddress.com>

Newsgroups:

comp.lang.c++

Date:

Thu, 06 Nov 2014 15:57:28 -0600

Message-ID:

<m3gqrv$vs4$1@dont-email.me>

On 11/6/2014 3:43 PM, Mr Flibble wrote:

On 06/11/2014 21:40, Christopher Pisz wrote:

On 11/6/2014 3:14 PM, K' Dash wrote:

Hello All

I want to hard code the link list., please see the figure
________________________
|GUID_address|IPaddress|
| | |
| | |
| | |
| | |
------------------------

I wrote this code in header (.h)file:
******************************************************************************

bool GetMatchingGUID (GUID_address guidaddress,Ipv4Address currentIP);

struct MappingTable
   {
     GUID_address GUIDaddr;
     Ipv4Address IPaddr;
   };
typedef std::list<struct MappingTable> MAPTble;
typedef std::list<struct MappingTable>::iterator MAPTbleI;
MAPTble m_mappingTable;
******************************************************************************

I want to hard code the GUID address column and the other one just
remain an empty , on request I want to fill it. please tell me how to
write the code in its .cc file?
one thing more I want to call this list in constructor as well.

Not really sure what you are looking for.
Maybe this?

class Something
{
     std::map<GUID_address, shared_ptr<Ipv4Address> m_map;

public:
      Something()
      {
          shared_ptr<Ipv4Address> uninitialized;
          m_map[GUID_address("1")] = uninitialized;
          m_map[GUID_address("2")] = uninitialized;
      }

      void Later()
      {
          m_map[GUID_address("2")] = shared_ptr<Ipv4Address>(new
Ipv4Address());
      }
};

One should prefer unique_ptr to shared_ptr; only use shared_ptr if you
want sharing semantics.

/Flibble

Hard to tell without more requirement details. I assume he wants a
lookup for others to get a hold of the Ipv4 Address, store it, and use
it, so I went with shared_ptr. I'm just going by the name if the thing.