I would like some clarification regarding the expected role of
`CustomStringConvertible` for types which have a natural, lossless, string
representation.
I don't have good terminology to use here, but is the expectation that the
"textual string representation" is a readable description of the object? This
seems to correspond to the synthesized (?) default definition for struct types,
as well as some of the uses for Foundation types without natural string
representations (i.e. `Foundation.Notification` reports something like "name =
foo, object = ..., userInfo = ...").
Or, is the expectation that it provide a string *representation* of the object,
for objects where that makes sense. This corresponds to the use in
`Foundation.UUID`, or the example of `Point.description` from the stdlib's
`CustomStringConvertible` documentation.
Another way of phrasing this question is: for types which have a reversible
string representation, should I expect `CustomStringConvertible.description` to
give me a string I could use to reconstruct an instance _without_ knowing its
type?
And another way (my actual question) is, given a `struct Path` object which
contains a path string, what should `print(Path("a"))` print?
- Daniel
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