Topics

Rows are ordered based on estimated difficulty.

lifetimes[-adjacent]	`trait`s	`struct`s
explicit lifetimes	`Fn`?	`Duration`
from reference	`curry`	All Errors?
extracting lifetimes	`async` `Fn`	`RcChars`
`'static` return	exclusive traits	`Result` ordering
composition	merging traits	`AnyStr`

p.s. most of the exercises are actually about traits, this categorisation isn't strict.