Merge pull request AllenDowney#45 from lbt/patch-1

AllenDowney · web-flow · commit 0b0fa51850c1 · 2018-12-01T14:55:54.000-05:00
Improved(?) string subtraction example
diff --git a/book/book.tex b/book/book.tex
@@ -1644,7 +1644,7 @@ \section{String operations}
 if the strings look like numbers, so the following are illegal:
 
 \begin{verbatim}
-'2'-'1'    'eggs'/'easy'    'third'*'a charm'
+'chinese'-'food'    'eggs'/'easy'    'third'*'a charm'
 \end{verbatim}
 %
 But there are two exceptions, {\tt +} and {\tt *}.

Original file line number	Diff line number	Diff line change
`@@ -1644,7 +1644,7 @@ \section{String operations}`
`1644`	`1644`	`if the strings look like numbers, so the following are illegal:`
`1645`	`1645`
`1646`	`1646`	`\begin{verbatim}`
`1647`		`-'2'-'1' 'eggs'/'easy' 'third'*'a charm'`
	`1647`	`+'chinese'-'food' 'eggs'/'easy' 'third'*'a charm'`
`1648`	`1648`	`\end{verbatim}`
`1649`	`1649`	`%`
`1650`	`1650`	`But there are two exceptions, {\tt +} and {\tt *}.`