You could write <'a, T: Monoid + From<&'a str>> and omit the where clause, but that seems even less readable to me. The rest basically has to be there for the f

You could write <'a, T: Monoid + From<&'a str>> and omit the where clause, but that seems even less readable to me. The rest basically has to be there for the function to do what it does.