Difference between revisions of "Talk:ISDBSongList::Delete"
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If I try to delete a track within a loop, the loop does not get the updated .count and it will go out of bounds.. | If I try to delete a track within a loop, the loop does not get the updated .count and it will go out of bounds.. | ||
| − | + | <source lang="vb"> | |
| − | |||
| − | |||
For x = 0 to sdbsonglist.count-1 | For x = 0 to sdbsonglist.count-1 | ||
if sdbsonglist.item(x).rating < 50 then | if sdbsonglist.item(x).rating < 50 then | ||
| Line 10: | Line 8: | ||
end if | end if | ||
Next | Next | ||
| − | + | </source> | |
that is a realistic situation when you are checking a track list for certain criteria (ie rating etc) and you want to remove a track without creating a new secondary songlist object. | that is a realistic situation when you are checking a track list for certain criteria (ie rating etc) and you want to remove a track without creating a new secondary songlist object. | ||
--[[User:Teknojnky|Teknojnky]] 23:03, 4 February 2008 (EST) | --[[User:Teknojnky|Teknojnky]] 23:03, 4 February 2008 (EST) | ||
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| + | : The (probably easiest) trick to do that is counting backwards, from SDBSongList.Count - 1 to 0, and with step -1. See the example: | ||
| + | <source lang="vb"> | ||
| + | For x = SDBSongList.Count - 1 To 0 Step -1 | ||
| + | If SDBSongList.Item(x).Rating < 50 Then | ||
| + | SDBSongList.Delete(x) | ||
| + | End If | ||
| + | Next | ||
| + | </source> | ||
| + | : -- [[User:Steegy|Steegy]] 15:18, 15 April 2008 (EDT) | ||
Latest revision as of 19:18, 15 April 2008
What is the best way to use this method?
If I try to delete a track within a loop, the loop does not get the updated .count and it will go out of bounds..
For x = 0 to sdbsonglist.count-1
if sdbsonglist.item(x).rating < 50 then
sdbsonglist.delete(x)
end if
Nextthat is a realistic situation when you are checking a track list for certain criteria (ie rating etc) and you want to remove a track without creating a new secondary songlist object. --Teknojnky 23:03, 4 February 2008 (EST)
- The (probably easiest) trick to do that is counting backwards, from SDBSongList.Count - 1 to 0, and with step -1. See the example:
For x = SDBSongList.Count - 1 To 0 Step -1
If SDBSongList.Item(x).Rating < 50 Then
SDBSongList.Delete(x)
End If
Next- -- Steegy 15:18, 15 April 2008 (EDT)
