🚀 go-pugleaf

Does it work like this as well:
  ItemIter finder = items.find( 123456);
to retrieve the name?
Can I also use it for complex struct?
If you can't antwer that from the head, then leave it. I will try to look 
up in the online help tonight.
Thanks for your time and the detailed exsample.

Phuoc Can HUA



On Tue, 11 May 2004 20:52:42 -0400, Ed Mulroy [TeamB] 
<dont_email_me@bitbuc.ket> wrote:

> There is a kind of list that is in C++ that automatically is sorted.
> It's called a map.  For example, when you put things into it you can
> index it on the string and get out the number associated with the
> string.  The string would be the key.
>
> Try running this:
>
>   -------------------
>   #include <vcl.h>
>   #pragma hdrstop
>   #include <map>
>   using namespace std;
>
>   struct MyCompare // so it knows how to compare the keys
>     {
>     bool operator()(const AnsiString& a1, const AnsiString& a2)
>       {
>       return a1 < a2;
>       }
>     };
>
>   // map with an AnsiString for a key, unsigned for data
>   typedef map<AnsiString, unsigned, MyCompare> ItemMap;
>   typedef ItemMap::iterator ItemIter;
>
>   WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
>     {
>     Application->Initialize();
>     ItemMap items;
>
>     items["Grape"] = 78901;
>     items["Bananna"] = 123456;
>     items["Apple"] = 56789;
>     items["Strawberry"] = 32768;
>
>     AnsiString result;
>     ItemIter finder = items.find("Bananna");
>
>     result.printf("Item: %s ID: %d", finder->first, finder->second);
>     ShowMessage(result);
>
>     for (finder = items.begin(); finder != items.end(); ++finder)
>       {
>       result.sprintf("Item: %s ID: %d", finder->first,
> finder->second);
>       ShowMessage(result);
>       }
>
>     return 0;
>     }
>
>   -------------------
>
> .  Ed
>
>> PC Hua wrote in message
>> news:opr7uyeayypmxkmr@newsgroups.borland.com...
>>
>> For instance, I have a list (the length is known) of
>> components:
>>    Item.Name="Apple";
>>    Item.ID= 56789; // Sytem generated and initialized in
>> runtime
>>    ...
>> Now my problem is to retrieve the name for a given ID.
>> Is there any implementation of a list which allows to find the
>> name of the
>> item efficiently?
>> Any suggestion?
>
>



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