Hi there,
May I know what’s the best way to obtain only items that appear as decimals/doubles in a list?
Thank you!
You should be able to use Object.Type to filter the items.
Thank you for the help, I have another question after using the Object.Type node, how am I supposed to extract the items out after filtering them? I’m not sure what to put in the false input for ‘If’ node, and the list.filterbyboolmask node doesn’t seem to work. I understand that it’s the "null’ values that’s causing the warnings but I guess I am going to ignore them for now…
Thank you 
I would use a FilterByBoolMask. You still have to handle the null values, but then you would filter your original list by those booleans.
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replacenull with false first at string.contains before filter
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Thank you!
Hello @efyst2
To make a script with datashapes UI work good i would recommend to test your outputs before passing them to other nodes.
If a user cancels the UI, closes the UI or gives no inputs, the script should stop running by passing an empty list.
And you can even adapt such a test-codeblock for any other needs:
x;
[Imperative]
{
return (List.IsEmpty(x))? []:
(x==null)? []: x;
};
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You can also use the List.RemoveIfNot node, which essentially filters out anything that is not of your chosen type
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Thank you for all the useful tips!! 
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