commit 422896740fbe5861b5400cf290e3510c65115ed6
parent e0af876fa30be43ede29bc787d22f76d7de1506a
Author: Greg Hendershott <greghendershott@gmail.com>
Date: Thu, 8 Nov 2012 16:45:41 -0500
Make some edits suggested by Jon Rafkind.
Diffstat:
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/main.rkt b/main.rkt
@@ -242,7 +242,7 @@ Let's start by looking closely at what the input actually @italic{is}:
(define-syntax (show-me stx)
(print stx)
#'(void))
-(show-me '(i am a list))
+(show-me '(+ 1 2))
]
The @racket[(print stx)] shows what our transformer is given: a syntax
@@ -674,8 +674,9 @@ but not be scared of, or confused about, that for which it's
shorthand.
Most of the materials I found for learning macros, including the
-Racket @italic{Guide}, do a very good job explaining how patterns
-and templates work. I'm not going to regurgitate that here.
+Racket @italic{Guide}, do a very good job explaining
+@hyperlink["http://docs.racket-lang.org/guide/pattern-macros.html" "how
+patterns and templates work"]. So I won't regurgitate that here.
Sometimes, we need to go a step beyond the pattern and template. Let's
look at some examples, how we can get confused, and how to get it
@@ -890,8 +891,10 @@ Using @racket[format-id] is convenient as it handles the tedium of
converting from syntax to symbol datum to string ... and all the way
back.
-Finally, here's a variation that accepts any number of name parts that
-are joined with hyphens:
+@subsubsection{Another example}
+
+Finally, here's a variation that accepts an arbitary number of name
+parts to be joined with hyphens:
@i[
(require (for-syntax racket/string racket/syntax))
@@ -909,6 +912,7 @@ are joined with hyphens:
(foo-bar-baz 50)
]
+
To review:
@itemize[
