Crash Course in Lists

ID:161836
 
Mar 26 2008, 3:22 am
Adding/Taking to/from a list is easy...

var/list/LISTNAME=list()

LISTNAME+=insert
LISTNAME-=insert


However what If you want to add more? I can't precisely remember how to do it..

var/list/LISTNAME=List("1"="1","2"="2")


How would I be able to add
"3"="3" ?

3 things;

1) This is all hypothetical variables, this isn't actual reference to code. A list to determine a number is just daft.

2) Is it possible to allow more than one thing defined to each? Such as..
Var/list/LISTNAME=List("1"="1"&"1.5","2"="2"&"2.5")


3) I apologies that this probably seems easy and I'm overlooking this however my mind does not seem to be working today.
Mar 26 2008, 4:06 am
To both questions, yep.

To add associative values, such as "1"="1":

list["Category"] = "SomeValue"


To contain multiple items in one slot, you can use multi-dimensional lists like this:

var/list[] = list("Item1",list("Item2.1","Item2.2"))
Mar 26 2008, 4:08 am
In response to DivineO'peanut
DivineO'peanut wrote:
To both questions, yep.

To add associative values, such as "1"="1":

> list["Category"] = "SomeValue"
>

To contain multiple items in one slot, you can use multi-dimensional lists like this:

> var/list[] = list("Item1",list("Item2.1","Item2.2"))
>


So say for example I want to add..

Bunnie
Chicken
Grass

all in one go to the list.. how would I go about it? I'm sorry but I'm just not quite understanding this here.

And then how would I examine the list for it all? >.>
Mar 26 2008, 4:11 am
In response to Bunnie
 
var/somelist[] = list(list("Bunnie","Chicken","Grass))


To access these values:

somelist[index][other_index]


So, if you want to see what is in the 2nd slot of the first item in the list ("Chicken" in this case), you can do this:

</dm>
somelist[1][2]
</dm>
Mar 26 2008, 4:13 am (Edited on Mar 26 2008, 4:24 am)
In response to DivineO'peanut
DivineO'peanut wrote:
> var/somelist[] = list(list("Bunnie","Chicken","Grass))
>

To access these values:

> somelist[index][other_index]

So, if you want to see what is in the 2nd slot of the first item in the list ("Chicken" in this case), you can do this:

</dm>
somelist[1][2]
</dm>

Ahh that is similar to other coding, but you didn't quite answer my question, how would I ADD Them?

I.e

somelist+=list("Bunnie","Chicken","Grass")


Or have I just guessed that right? >_>
Mar 26 2008, 4:24 am
In response to Bunnie
You've guessed right. :-)

But, I'm pretty sure I have answered it! You never asked how to add the lists. :-/
Mar 26 2008, 4:30 am
In response to DivineO'peanut
DivineO'peanut wrote:
You've guessed right. :-)

var/somelist[] = list()
somelist+=list("Bunnie","Chicken","Grass")

if(somelist.Find("Bunnie"))
    world<<"We found Bunnie!"


Now how do I get all the bits 'associated' with Bunnie? I.E

world<<"We found Bunnie! [somelist.Bunnie.1] [somelist.Bunnie.2]"


.1 being Chicken
.2 Being Grass
Mar 26 2008, 4:53 am
In response to Bunnie
 
var/Bunnie/B = somelist[1][2]
usr << "[B.type] was found in somelist[1][2]."
Mar 26 2008, 4:56 am
In response to DivineO'peanut
DivineO'peanut wrote:
> var/Bunnie/B = somelist[1][2]
> usr << "[B.type] was found in somelist[1][2]."
>


I'm trying to refrain from hard-coding this, which is why I keep making references to being able to add/remove things from the list and still find what I'm looking for.

How can I add/take it to/from..
var/list/Somelist = list()
Mar 26 2008, 5:17 am
In response to Bunnie
 
for(var/list in somelist)
    for(var/item in list)
        if(istype(item,/Bunnie))
            // Do something.


Oh, you may want to check if <code>list</code> is actually a list.

if(istype(list,/list))
    // Do stuff.
Mar 26 2008, 5:24 am
In response to DivineO'peanut
DivineO'peanut wrote:
> for(var/list in somelist)
>     for(var/item in list)
>         if(istype(item,/Bunnie))
>             // Do something.
>



var/list/somelist = list()

somelist+=list("Bunnie","Chicken","Grass")

//somelist=list(list("Bunnie","Chicken","Grass"))

for(var/list in somelist)
    for(var/getlist in list)
        if(istype(getlist,"Bunnie"))
            world<<"Found Bunnie!"
            world<<"Found [getlist] with [getlist.1] [getlist.2]


Right?
Mar 26 2008, 3:27 pm
Bunnie wrote:
However what If you want to add more? I can't precisely remember how to do it..

var/list/LISTNAME=List("1"="1","2"="2")

How would I be able to add
"3"="3" ?

LISTNAME["3"] = "3"

2) Is it possible to allow more than one thing defined to each? Such as..
Var/list/LISTNAME=List("1"="1"&"1.5","2"="2"&"2.5")


You make the association into a list itself. So:

var/list/LISTNAME = list("1" = list("1", "1.5"), "2" = list("2", "2.5"))
LISTNAME["3"] = list("3","3.5")

LISTNAME["3"] will now give you list("3", "3.5").