Any advice @natefaubion ? Is this a good use of Lazy?

In general, I consider Lazy to be unnecessary unless you need to rely on memoization of work. Since you only want to defer an argument to potentially evaluate once in a conditional branch, I would use Unit -> a rather than Lazy a. Lazy has overhead in comparison to Unit -> a because it needs to allocate both a mutable reference box and a closure for the work.

I would use Unit -> a rather than Lazy a

Thx I'll do that.