Cull all items from a list if they are contained in a second?

Hey!

I have 2 lists containing lines (not the same order, differently generated) and would like to cull all items of List A if any of these is contained in a second List B.

Is there a solution to this problem specifically?

Thanks!

Replies to This Discussion

Permalink Reply by ibrahim çağrı uslu on April 24, 2013 at 9:30am

you want to cull all the list a if any of items happen to be exist in list b, or do you want to remove the duplicates? you can write an expression to achieve them, expression "contains" checks the existance of an item in a list, and expression "if" can be used for creating conditional results. if you could be more clear or add your files to your post, i can look your definition and help. (i guess :) )

Permalink Reply by Christian D on April 24, 2013 at 9:39am

Hi Ibrahim! I did not want to remove the duplicates (I know there is a function for it),

I wanted to remove all items that are the same as in the second list.

I managed it due to http://www.grasshopper3d.com/forum/topics/removing-not-duplicated-l...

Someones VB Script.

But your solution seems interesting since it seems simpler :)

Something along if contains anyitemsfromlist B in a cull function?

Permalink Reply by ibrahim çağrı uslu on April 24, 2013 at 10:00am

my shift hours are over now, and i need to leave the office. tomorrow i'm gonna post it, maybe that can help you in future :)

Permalink Reply by Christian D on April 24, 2013 at 12:03pm

tesekkür ederim, if you should find the time tomorrow :)

Permalink Reply by ibrahim çağrı uslu on April 25, 2013 at 1:08am

you're welcome =) this is an alternative quick solution, using kangaroo's removeduplicatecurves. that was not the solution that i was thinking yesterday, but if you will understand the basic logic, you can derive lots of alternative ways. =) let me know if you'll need any further assistance on this issue.

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