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BCyo+8C4
Voice
Joined: 03 Sep 2006
Posts: 24
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 Posted: Thu Nov 08, 2007 12:34 pm Post subject: selecting a random item from an array |
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Hi,
I've got an array that's populated using | Code: | | set players($nick) 1 |
, the "1" there is increased depending on certain events later.
Now my problem: I want to select a random item (= nick) from the $players array, but I can't figure out how to do it.
| Code: | | set tnick [lindex $players [rand [llength $players]]] |
just tells me later on that can't read "tnick": no such variable and I have no idea what code I'd have to use instead.
Thx for any help.
PS: I only need a random nick from the array, not the number behind it. |
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nml375
Revered One
Joined: 04 Aug 2006
Posts: 2857
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| Posted: Thu Nov 08, 2007 1:10 pm Post subject: |
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players is an array, not a flat variable containing a list... big difference there..
The command you need to use with arrays is called array.
llength only operates on lists, same goes for lindex.
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NML_375, idling at #eggdrop@IrcNET |
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BCyo+8C4
Voice
Joined: 03 Sep 2006
Posts: 24
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| Posted: Thu Nov 08, 2007 1:33 pm Post subject: |
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I tried various array commands as well, like this one:
| Code: | | set tnick [[array names $players] [rand [array size $players]]] |
I spent about 1,5h trying to figure this out already, the help files don't help me with this anymore. So could you please tell me how to do it? |
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nml375
Revered One
Joined: 04 Aug 2006
Posts: 2857
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| Posted: Thu Nov 08, 2007 1:39 pm Post subject: |
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Have a second look at "array names", and you should see that it returns a list of keys in the array. That on it's own is quite unusable as a command.
But, since you now got a list of names, make use of commands such as lindex to actually select an item from that list...
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NML_375, idling at #eggdrop@IrcNET |
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BCyo+8C4
Voice
Joined: 03 Sep 2006
Posts: 24
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| Posted: Thu Nov 08, 2007 1:49 pm Post subject: |
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| seriously, I already played ages with those commands and couldn't figure it out. if you want to help me please do so, but don't make me look like someone who doesn't rtfm! |
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rosc2112
Revered One
Joined: 19 Feb 2006
Posts: 1454
Location: Northeast Pennsylvania
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| Posted: Thu Nov 08, 2007 4:22 pm Post subject: |
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In other words, get the array names into a list variable, then pull the random name you want, then use that name to get the data from the array!  |
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Sir_Fz
Revered One
Joined: 27 Apr 2003
Posts: 3793
Location: Lebanon
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| Posted: Thu Nov 08, 2007 6:16 pm Post subject: |
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| Code: | set playersList [array names players]
set tnick [lindex $playersList [rand [llength $playersList]]] |
Edit: Thanks Tosser^^
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Last edited by Sir_Fz on Fri Nov 09, 2007 8:15 pm; edited 1 time in total |
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r0t3n
Owner
Joined: 31 May 2005
Posts: 507
Location: UK
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| Posted: Fri Nov 09, 2007 3:35 pm Post subject: |
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a little error there Sir_Fz, forgot the rand...
| Code: | set playersList [array names players]
set tnick [lindex $playersList [rand [llength $playersList]]] |
or in one line:
| Code: | | set tnick [lindex [array names players] [rand [array names players]]] |
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BCyo+8C4
Voice
Joined: 03 Sep 2006
Posts: 24
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| Posted: Sat Nov 10, 2007 6:22 am Post subject: |
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| thanks guys. I had already tried that method before but due to an error later in the script the $tnick wouldn't be picked up (strangely it was when I had set it manually, that's why I didn't figure it at first) |
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