# Compare two lists **URL:** \ **Category:** Lists-Logic\ **Created:** [June 17, 2019, 11:11am UTC](https://forum.dynamobim.com/t/compare-two-lists/37255 "2019-06-17T11:11:04Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![frodriguezmXYFSS](https://avatars.discourse-cdn.com/v4/letter/f/8e8cbc/32.png) [@frodriguezmXYFSS](https://forum.dynamobim.com/u/frodriguezmXYFSS)\ **Post date:** [June 17, 2019, 11:11am UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/1 "2019-06-17T11:11:04Z")
Dears, I need help to fix this issue. I’m trying to get a boolen list comparing to uniqual list, but what I get it’s not a proper result. FInd image below: ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/9/69d33a7822870967804a5f565bf8ef7f5d48a05b.png) What I’m lookinf for it’s a list such as this one: [false, true, true, true, true, true, true, true, true, true, false, false, false,…] Why cannot I get it correctly? Thanks in advance ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [June 17, 2019, 11:32am UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/2 "2019-06-17T11:32:25Z")
Not sure what you are after, but I think you are asking ‘does List A contains any of the items in List B?” If so, an == node with cross product lacing, followed by a List.Contains node with true as the item and longest lacing should do the trick. ---
**Author:** ![frodriguezmXYFSS](https://avatars.discourse-cdn.com/v4/letter/f/8e8cbc/32.png) [@frodriguezmXYFSS](https://forum.dynamobim.com/u/frodriguezmXYFSS)\ **Post date:** [June 17, 2019, 11:43am UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/3 "2019-06-17T11:43:38Z")
What I’m looking for it’s compare list 1 with list 2 get a list showing wich values in 2 are in 1. ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/9/c/9c323d3acb75808a2df5bd52d741af6dd127b24b.jpeg) ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [June 17, 2019, 12:14pm UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/4 "2019-06-17T12:14:57Z")
== node with cross product lacing. List.Contains to look for a ‘true’ with longest lacing. ---
**Author:** ![Thomas.lcp](https://avatars.discourse-cdn.com/v4/letter/t/d9b06d/32.png) [@Thomas.lcp](https://forum.dynamobim.com/u/Thomas.lcp)\ **Post date:** [June 17, 2019, 12:32pm UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/5 "2019-06-17T12:32:03Z")
Hi ! I have a solution i think. Say me if it’s good for you 🙂 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/c/8/c8adbbbfcfaea73b9e82205f875a4e3f97c35ffa.png) ---
**Author:** ![frodriguezmXYFSS](https://avatars.discourse-cdn.com/v4/letter/f/8e8cbc/32.png) [@frodriguezmXYFSS](https://forum.dynamobim.com/u/frodriguezmXYFSS)\ **Post date:** [June 17, 2019, 2:00pm UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/6 "2019-06-17T14:00:45Z")
I don’t get the requeried list ☹ ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/2/d2d00cc8a46f45bf3b25bde5dee259f490f0e355.png) ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [June 17, 2019, 2:17pm UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/7 "2019-06-17T14:17:52Z")
Swap your X and Y inputs in the == node, or use a List.Transpose node immediately after it. ---
**Author:** ![Nick\_Boyts](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/nick_boyts/32/76313_2.png) [@Nick\_Boyts](https://forum.dynamobim.com/u/Nick_Boyts)\ **Post date:** [June 17, 2019, 2:51pm UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/8 "2019-06-17T14:51:26Z")
List.Contains should be all you need. ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/3/63f77b048c2aadcfd9ace9171f83d79b404186dd.png) ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [June 17, 2019, 2:59pm UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/9 "2019-06-17T14:59:46Z")
The solution I proposed: ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/4/d/4de99d4da8e004d9ab6cac7aa6ab2f5426c5dd56.jpeg) ---
**Author:** ![frodriguezmXYFSS](https://avatars.discourse-cdn.com/v4/letter/f/8e8cbc/32.png) [@frodriguezmXYFSS](https://forum.dynamobim.com/u/frodriguezmXYFSS)\ **Post date:** [June 18, 2019, 7:40am UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/10 "2019-06-18T07:40:34Z")
Thank you, this solved my problema. ---
**Author:** ![Thomas.lcp](https://avatars.discourse-cdn.com/v4/letter/t/d9b06d/32.png) [@Thomas.lcp](https://forum.dynamobim.com/u/Thomas.lcp)\ **Post date:** [June 18, 2019, 8:11am UTC](https://forum.dynamobim.com/t/compare-two-lists/37255/11 "2019-06-18T08:11:54Z")
Which post ? Click solved on it 😉