I just jumped to Dynamo 2.0.0 today and I noticed a difference between Dynamo 1.x and Dynamo 2.x.
The Node List.ContainsItem (in 1.x) and List.Contains (in 2.x) perform the same action on the lists, but I keep getting different results. In the new version 2.x the Node doesn´t return true on the Index1.
Is there any alternative to go around this issue? It must be a general issue, which affects a lot of scripts out there?
I noticed this issue when trying to adapt an old script from 1.3.x to 2.0 and it simply didn’t work because of this List.Contain “step”.
@Vikram_Subbaiah thank you for your solution!
Do you know if this is the Node “normal” Behaviour, or is this solution a “workaround”? It seems that this Node is more complicated to use in the new version of Dynamo, than in previous ones.
I read the Post related with this Dynamo new version. If the “Auto” lacing match the single items with lists as the “Shortest” behavior did in previous releases, why should we need to specify the lvl of the items input inside of the Node? If it is supposed to work out like previous versions, one shouldn’t need to specify any levels (just thinking out loud)
I am just trying to understand the change here, thank you again @Vikram_Subbaiah
What’s a bit ambiguous about this is that at a certain point in ver 1.x, the “default” lacing option was made “smarter” and upgraded to act the same way as Auto in 2.0 while still looking the same way as shortest lacing. Not sure if there was enough publicity about this change:
Now it seems like 1.3 nodes are incorrectly being upgraded to the wrong lacing.
Yes. When I was upgrading my scripts to the 2.0 Version, the “Auto” lacing was not behaving as the “shortest” lacing in 1.x, hence different or wrong results came up.
As I am fairly new to Dynamo I will need to check this differences by myself, perhaps making some tests with Lists.
If there is more documentation about the differences on this lacing theme, please let me know. As far as I know, Lacing needs to be fully understood in order to make a successful script.
I tried to sketch the logic behind the Lacing, but I am not sure if its correct. Either I didn’t understand the lacing in 1.X Dynamo Version (I was able to make some Scripts work though ) or I just forgot my brain while coming back from holidays.
Please bear with me
Regarding the Lacing on Node List.Contains :
“Shortest” V1.X behaves as “Auto” with @Lvl in V2.0
I’d initially assumed that Auto was the most appropriate of the three original lacing options for a particular node.
However, I was made to understand here, a few months ago, that not only was AUTO lacing something else, but that the way lacing has worked prior to 2.0 hasn’t exactly been accurate.
Took a closer look. One thing that hasn’t been pointed out, is that the “old” node worked on a singleton (“var”) type of input, where as the “new” node’s item input is of variable rank (“var…”). That will have a huge effect on how the function is mapped and the particular change doesn’t make much sense for this node’s use case. The easiest way to restore the old functionality is to leave the lacing as auto and set the level of the “item” input to @L1: