Saucepan Man's Site - Lists & using new()

Lists & using new() in Developer Help

ID:273536

Jul 21 2010, 10:07 pm

Is there a way to use list associations without always having to check for the list & making a new one (else get a bad index error)??

    PatchUp()
        if(!Number) Number=new() //these lines here
        if(!MissingNumber) MissingNumber=new()
        if(Number[src]==(MissingNumber[src.Village]+1))
            Number[src]--; MissingNumber[src.Village]++

Can you just define them with it? What are the ramifications of that if you can?

var/list
   MissingNumber[]=new()
   Number[]=new()

#1 Jul 21 2010, 10:13 pm

Ripiz

var/list
   MissingNumber = list()
   Number = list()

But make sure you never do MissingNumber = null to empty list, better MissingNumber = list()

#2 Jul 21 2010, 10:17 pm In response to Ripiz (#1)
Saucepan Man	what about `MissingNumber[src]=null`??

#3 Jul 21 2010, 10:19 pm In response to Saucepan Man (#2)
Ripiz	If MissingNumber[src] is number, text or reference it's fine, but if it's another list you'll have to do MissingNumber[src] = list()

#4 Jul 21 2010, 10:24 pm

In response to Ripiz (#3)

Saucepan Man

:O YOU CAN DO THAT?

SO like....

var/PeopleOnline=list()
Login()
   PeopleOnline[src.Colour]+=src

mob/verb/Dance()
   if(src in PeopleOnline["White"])
      usr<<"You failed to perform any notable dance moves and no ladies thought you were cool. In fact all you achieved was knocking some big guys drink out of his hand... You had best run!"
   else if(src in PeopleOnline["Black"])
      usr<<"Your fantastic dance moves astound everyone! You score 1,000 ladies! Well done."
   else if(src in PeopleOnline["Green"]
      usr<<"Your alien dance moves are lost on these earthlings..."

#5 Jul 21 2010, 10:27 pm In response to Saucepan Man (#4)
Ripiz	Doesn't mean src.Colour will be there >.> If it's only 3 colors, you can define it in variable var/list/PeopleOnline = list("White" = list(), "Black" = list(), "Green" = list())

#6 Jul 21 2010, 10:30 pm In response to Ripiz (#5)
Saucepan Man	If it were a bajillion colours, would the initial method work (i'm sensing: no)

#7 Jul 21 2010, 10:32 pm In response to Saucepan Man (#6)
Ripiz	Sadly no, you'll have to check if it's exists in list, if not then add and initialize list for it.

#8 Jul 21 2010, 10:36 pm

In response to Ripiz (#7)

Saucepan Man

src.Colour="slightly offish shade of red with a hint of magnolia"
if(!(src.Colour in PeopleOnline)) PeopleOnline+=list(src.Colour= list())
PeopleOnline[src.Colour]+=src

Like that?

#9 Jul 21 2010, 10:41 pm

In response to Saucepan Man (#8)

Ripiz

Colour = "slightly offish shade of red with a hint of magnolia"
if(!(Colour in PeopleOnline))
   PeopleOnline += Colour
   PeopleOnline[Colour] = list(src)

#10 Jul 21 2010, 10:47 pm In response to Ripiz (#9)
Saucepan Man	Thankyou ^_^ enjoy this Old Spice Guy video as thanks :D http://www.youtube.com/watch?v=SLz5ArupElA

#11 Jul 22 2010, 1:08 am In response to Ripiz (#9)
Kaiochao	From my experience with lists(caching random crap), you don't need to add an item to associate it with something. <dm> if(!(Colour in PeopleOnline)) PeopleOnline[Colour] = list(src)