# Topics

Rows are ordered based on estimated difficulty.

| lifetimes              | `trait`s           | `struct`s   |
|------------------------|--------------------|-------------|
| [explicit lifetimes]   | [`Fn`?]            |             |
| [extracting lifetimes] | [exclusive traits] | [`RcChars`] |
|                        | [`AnyStr`]         |             |
|                        | [merging traits]   |             |


[explicit lifetimes]: ./exercises/refbind.md
[`Fn`?]: ./exercises/bind.md
[`RcChars`]: ./exercises/rcchars.md
[extracting lifetimes]: ./exercises/bool_stream.md
[exclusive traits]: ./exercises/multiple_blanket.md
[merging traits]: ./exercises/modes.md
[`AnyStr`]: ./exercises/anystr.md