Use of { & } to delimit functions in an object

Question

I'm in a discussion with a colleague on whether its legal to use {} to delimit nested variables in an if statement. 
 I.e.: 
 if( { this 
 and(or( isnull(local!shortRecon.recordsRequested), isnull(local!shortRecon.reconsiderationRequested) ), local!claim.claimStatusId<>cons!OWB_DBID_LOOKUP_ID_CLAIM_STATUS_FINAL_ORDER_ISSUED ) }, and this 
 { this 
 if(isnull(local!shortRecon.recordsRequested),a!save(ri!recon.recordsRequested,false),{}), if(isnull(local!shortRecon.reconsiderationRequested),a!save(ri!recon.reconsiderationRequested,false),{}) 
 }, and this {} ) 
 
 Is this acceptable use?

Mike Schmitt · Answer

I'm not even sure what you mean by "nested variables" in the context of the code sample you've posted here. Any chance you could post a cleaner example, with indentation, and in a Code Box where it'll maintain some amount of readability? If any of the wording ("and this" etc) is meant as annotative, then put it in /* comment blocks */ for clarity. 
 I will say, up front, that you can nest and() and or() conditional logic to almost any level (limited only by a viewer's ability to make sense of whatever spaghetti code we end up creating), which never requires "{}" - since as Stefan correctly noted, these specifically incidate arrays to Appian.

Use of { & } to delimit functions in an object

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