Computer Science Canada

Checking items in a list
Author:  tupac [ Thu Mar 16, 2006 3:38 pm ]
Post subject:  Checking items in a list
how do you check if an item in a list is the same as another item in the same list?
ex:
_____________
|item1 < same |
|item2 |
|item3 |
|item1 < same |
| |
|____________|
Author:  tupac [ Thu Mar 16, 2006 3:40 pm ]
Post subject: 
o, and also, if the 2 items are the same, how do you get rid of the latest one that showed up.
Author:  pavol [ Thu Mar 16, 2006 5:45 pm ]
Post subject: 
well you could use a for loop to cycle through the data in the list like this;
code:
For i = 0 To lstList.ListCount - 1
    For j = i + 1 To lstListCount
        If lstList.List (i) = lstList.List (j) Then
            lstList.RemoveItem (j)
        End If
    Next j
Next i
i only hope this code works cuz i just thought it up. if it doesn't it should be something like what i just wrote.
anyways, i hope it helps Very Happy
Author:  tupac [ Fri Mar 17, 2006 10:16 am ]
Post subject: 
well... that didnt help much... but i do get where ure comin from. may-b im duin it worng... i setup a timer w/ an interval of 1, and put ure code in the Private Sub Timer2_Timer()... is that how its supposed to work?? anyway, thnx for what u gave me so far... just tell me if wat im duin is rite (puttin it into a timer), and if so then ill try 2 tweak some more with it...
Author:  pavol [ Fri Mar 17, 2006 11:14 am ]
Post subject: 
i should think that's pretty much right to put it in a timer. makes sense, but you don't really need to check it that often. try putting the code after your code that adds an item to the list
so, something like this:
code:
lstList.AddItem whatever

For i = 0 To lstList.ListCount - 1
    For j = i + 1 To lstListCount
        If lstList.List (i) = lstList.List (j) Then
            lstList.RemoveItem (j)
        End If
    Next j
Next i
so taht means as soon as the user adds an item that's the same as another item in the list it should be taken away
Author:  cool dude [ Fri Mar 17, 2006 11:27 am ]
Post subject: 
yes pavol has the right idea! NO do not use a timer there is absolutely no point at all to use a timer in this case
Author:  tupac [ Fri Mar 17, 2006 1:31 pm ]
Post subject: 
well, actually there is a point... cuz im workin on a multi-user chat program, and i need to check if new users are loggin on very frequently.
Author:  pavol [ Fri Mar 17, 2006 3:00 pm ]
Post subject: 
well if you need it to be checked every so often then put the code in a timer, but i still think that you could do without it
Author:  tupac [ Sat Mar 18, 2006 2:03 pm ]
Post subject: 
well, wat i did is after i send the msg (name) i do the code:
code:

For i = 0 To lstNames.ListCount - 1
        For j = i + i To lstNames.ListCount
            If lstNames.List(i) = lstNames.List(j) Then
                lstNames.RemoveItem (j)
            End If
        Next j
    Next i

and now it doesnt clogg up the list... but the words continue on down for about 4 - 5 lines... and they go in a line like so:
code:

____________
|ddkddkddk....|
|ddkddkddk....|
|ddkddkddk....|
|ddkddlkddk...|
|___________|


Confused

:


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