Android Question Unable to use list of types

[Serge Bertet]

Hello all, here is a basic question I can't solve. Surely something simple.
Here is my code :

Sub Globals
    Type arrAnim(index As Int, time As Int, value As Int)
    Dim myArr As arrAnim
End Sub


Sub TestList
Dim myList As List
Dim time As Long

    time = DateTime.Now
    myList.Initialize
    For i = 0 To 10
        myArr.time = DateTime.Now - time
        myArr.value = i * 3
        myArr.index = i
        myList.Add(myArr)
    Next
End Sub

At the end I get a list that contains all items with same values.
Too obvious to find it by myself

Serge

 

[LucaMs]

You have to create a new myArr object each time you add it to your list, so you must declate it (myArr) inside the loop.

For i = 0 to 10
Dim myArr as arrAnim

(remove the declaration from the sub Globals)

 

[Serge Bertet]

You have to create a new myArr object each time you add it to your list, so you must declate it (myArr) inside the loop.

For i = 0 to 10
Dim myArr as arrAnim

(remove the declaration from the sub Globals)

I was thinking a way like that ... but Dim inside a loop is strange for me (I come from Pascal language).
I'll give it a try ... thank you very much for you help.

Another thing about lists : may I trust the arrangement or do I need to use an index to sort elements?

Serge

 

[Erel]

Worth seeing this video tutorial:

may I trust the arrangement or do I need to use an index to sort elements?

Yes the order is preserved.

Think of Lists as a more powerful version of arrays.

 

[LucaMs]

Thanks for your "Like", Erel, but it is undeserved: I forgot to write the initialization line; you can / should remove your "Like"

 

[Erel]

I'll privately share with you a secret:
You don't need to initialize a custom type if you are assigning values to its fields or all the fields types are numeric, strings or booleans. Though it is a good practice to always initialize types.

 

[LucaMs]

I'll privately share with you a secret:
You don't need to initialize a custom type if you assigning values to its fields or all the fields types are numeric, strings or booleans. Though it is a good practice to always initialize types.

Thanks, I will not tell anyone

 

[Serge Bertet]

Great video tutorial, thx, I'll keep the link.

Serge

 

[Erel]

Many more are available here: https://www.b4x.com/etp.html