Problem with list of lists

Question

input : {{1,3},{2,3},{4,5},{5,6}} 
 output : {3,6,20,30} 
 We have to get product of each item(i.e list) in the array. 
 Please help me out with this issue

Mike Schmitt · Answer

Appian does not handle list-of-lists well at all (and never has). You can attempt to call a!forEach() over your list-of-lists, but there's no guarantee it won't just iterate over each item individaully. It also largely depends on where you're getting your input data, which you haven't specified.

Mike Schmitt · Answer

Really, everything we need to know about how appian (fails to) handle list-of-lists can be seen with how it resolves the value stored in local!input:

Mike Schmitt · Answer

The only exception I've ever really seen to the above is how the result of merge() is treated - because for whatever reason, list-of-list data seems to be honored (to a certain extent) in this context (and perhaps this context alone). It's very frustrating since merge() is pretty unintuitive to understand and to use for real-world cases.

Problem with list of lists

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