Subtracting one list from another list without Ubot Dev?

[cujo56 2]

I have Ubot Studio and I am looking for a way to remove one list of items from another list.  I understand the Developer version has a command to do this ($subtract lists) however that isn't available to me. Is there a "manual" way to do this?

 

Thanks for your help.

 

Joe

[UBotDev 276]

It's actually pretty simple, you just need to loop through the main list once and remove item if it's in another list.

 

Here is an example:

clear list(%LIST Original)
add list to list(%LIST Original, $list from text("item1,item2,item3", ","), "Delete", "Global")
clear list(%LIST Substract)
add list to list(%LIST Substract, $list from text("item1,item3", ","), "Delete", "Global")
set(#LIST Original Row, 0, "Global")
loop($list total(%LIST Original)) {
    if($contains(%LIST Substract, $list item(%LIST Original, #LIST Original Row))) {
        then {
            remove from list(%LIST Original, #LIST Original Row)
        }
        else {
            increment(#LIST Original Row)
        }
    }
}

After running the code result can be found in list %LIST Original.

 

Also notice that UBot's $contains function will also return true if you check the list if it contains "item", "ite", "it" and "i",... that's why you would need to write a custom function for that part if $contains doesn't meet your requirements.

[cujo56 2]

Thanks for the quick and detailed reply. I think this will work for my needs... I am scraping all internal URLs from a website so I need to remove pages/urls already scanned from a "to do" list and place them in the "final list".