topics table

src/SUMMARY.md

@@ -11,3 +11,5 @@
 - [Chapter 2](./chapter_2.md)
   - [AnyStr](./exercises/anystr.md)
   - [Mode](./exercises/mode.md)
+
+[Topics (Spoilers)](./topics.md)

src/exercises/multiple_blanket.md

@@ -41,8 +41,7 @@ fn test2(x: impl A2) {
 # fn ap_move(t: Self::T) -> Self::T;
 # }
 # trait AWrapper: Wrapper<Self::AWrapped> { type AWrapped; }
-# impl<T: AWrapper> A for T where T::AWrapped: AProxy<T = T>,
-# {
+# impl<T: AWrapper> A for T where T::AWrapped: AProxy<T = T> {
 # fn a_ref(&self) -> u64 { <T::AWrapped as AProxy>::ap_ref(self) }
 # fn a_mut(&mut self) -> bool { <T::AWrapped as AProxy>::ap_mut(self) }
 # fn a_move(self) -> Self { <T::AWrapped as AProxy>::ap_move(self) }

src/topics.md

@@ -0,0 +1,19 @@
+# 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