[Solved] How do I add items to the beginning of a list?

[rongill100percentbho]

Hi, Thunkable. I seem to be having an issue with lists on my application. The application has one screen with one label in the center. I think that the following code should set the label to say “3”, but the application just freezes at this point, and refuses to do anything else.

Is there anything I am doing wrong? Thank you!

[kartik14]

Hi, @rongill100percentbho!

Welcome to our Community!

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@rongill100percentbho

Is there anything I am doing wrong?

Yep. There are two things you are doing wrong -

• First, you are initializing the variable at numerical type.
  And you are treating it as a list - i.e, you are inserting an item in a numerical variable; not in a list.
• Second, you are setting the label’s text to a list. Labels can have text source only, not list(s).

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So, in order to solve this, you just need to do this -

(This will set the label’s text to a number, i.e. 3.)

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Hope I helped you!
Thanks!

[actech]

Hi,

• Second, you are setting the label’s text to a list. Labels can have text source only, not list(s).

You are mistaken, Labels.text may take as a source list and display it on the screen. This is possible due to the fact that the list is converted to a string data type. For this reason, the text property of any component will be output and the number, and logical values ​​without problems.

[domhnallohanlon]

Hi @rongill100percentbho

Just to expand on Kartik’s point a little:

@kartik14

you are initializing the variable at numerical type.

I took a quick look and found that this won’t work because the myList variable is a number and not a list.

However, something like this will work because we’re just adding an extra list item to the end of the list:

Finally, if you don’t happen to know what the list contents will be you can always use the empty list block to create a list that has no contents.