I want to wrap values in a struct that adds some logic to it. For instance, I want to have a u64 wrapper that will only allow certain values to be set to it, and that validation is done using a trait.

There is a trait implementation that allows all values (i.e. it rejects none), and it would be neat to make that the "default".

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Uncommenting line 65 makes the code no longer build. I was kind of hoping that the default parameter on line 28 would be the magic sauce to make it work.

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