B4J Question list of lists?

[zak]

Hello, is it possible to create a list of lists, where every member of the list is a also a list? I think that an array of lists can be used (Public en_approximative_list(100) As List) but I don't know the number of items in advance..

 

[Erel]

Always prefer lists over arrays.

A list can hold any type of objects including other lists.

Dim MainList As List
MainList.Initialize
For i = 1 to 100
 Dim l As List
 l.Initialize
 l.Add(i)
 MainList.Add(l)
Next
Dim l As List = MainList.Get(54)
Log(l)

 

[LucaMs]

In some (many?) cases you could also store Lists in a Map; this way you can index the lists by their name.

Dim lstNameXXX As List
...
...
mapLists.Put("ListNameXXX", lstNameXXX)


Dim lstNameABC As List
...
...
mapLists.Put("ListNameABC", lstNameABC)

Dim ListName As String
ListName = "ListNameXXX"
Dim lstCurrent As List = mapLists.Get(ListName)