Add reference.

diff --git a/Chapters/Future.tex b/Chapters/Future.tex
index 523fc0a8a1a6d3313bb8354cb6e08e977159a993..8cfd12741e980970e49a04bfee4a1f42c003b3f5 100644 (file)
--- a/Chapters/Future.tex
+++ b/Chapters/Future.tex
@@ -214,8 +214,9 @@ happening.
 
 An important implication of this approach is that the order of writing
 function applications affects the state type. Fortunately, this problem can be
-localized by consistently using type synonyms for state types, which should
-prevent changes in other function's source when a function changes.
+localized by consistently using type synonyms for state types (see
+\in{section}[sec:prototype:substatesynonyms]), which should prevent
+changes in other function's source when a function changes.
 
 A less obvious implications of this approach is that the scope of variables
 produced by each of these expressions (using the \hs{<-} syntax) is limited to
@@ -223,8 +224,6 @@ the expressions that come after it. This prevents values from flowing between
 two functions (components) in two directions. For most Monad instances, this
 is a requirement, but here it could have been different.
 
-\todo{Add examples or reference for state synonyms}
-
 \subsection{Alternative syntax}
 Because of these typing issues, misusing Haskell's do notation is probably not
 the best solution here. However, it does show that using fairly simple

diff --git a/Chapters/Prototype.tex b/Chapters/Prototype.tex
index 720053c4f83a6b818fc3416d464696d0d81f8d1c..870b7ccc0266e75930a09947b1c103cc9c5ddec2 100644 (file)
--- a/Chapters/Prototype.tex
+++ b/Chapters/Prototype.tex
@@ -911,7 +911,7 @@
       We cannot leave all these \hs{State} type constructors out, since that
       would change the type (unlike when using type synonyms). However, when
       using type synonyms to hide away sub-states (see
-      \in{section}[sec:prototype:sub-statesynonyms] below), this
+      \in{section}[sec:prototype:substatesynonyms] below), this
       disadvantage should be limited.
 
       \subsubsection{Different input and output types}
@@ -938,7 +938,7 @@
         and output state types, possible reducing the type-safety of the
         descriptions.
 
-    \subsection[sec:prototype:sub-statesynonyms]{Type synonyms for sub-states}
+    \subsection[sec:prototype:substatesynonyms]{Type synonyms for sub-states}
       As noted above, when using nested (hierarchical) states, the state types
       of the \quote{upper} functions (those that call other functions, which
       call other functions, etc.) quickly become complicated. Also, when the