derive(Clone, Debug, Default)

[nandoflorestan]

I am using Param and ParamDef without using the rest of the library (so far).

When I tried to store Params in an array, Rust complained that it couldn't, for lack of one of these basic traits. If one of them is inappropriate, please enlighten this Rust beginner.

[Boscop]

Thanks. I think Clone and Debug make sense to derive but Default doesn't. In which situation do you need it to be Default?
If you have a struct where you derive Default that has a member like Option<Param> or Vec<ParamDef>, I recommend deriving SmartDefault instead, which is smart enough to know that the T doesn't have to be Default (because None and vec![] don't need to instantiate a T).