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C-escapes example.

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Also, remove old-style "~n"s.
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Eli Barzilay 2013-07-16 01:36:52 -04:00
parent d8989c2ae3
commit 3715c5c2b7
1 changed files with 6 additions and 5 deletions
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11
racket.html.markdown
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@ -70,7 +70,8 @@ Feedback is appreciated! You can reach me at [@th3rac25](http://twitter.com/th3r
;;; Strings are fixed-length array of characters.
"Hello, world!"
"Benjamin \"Bugsy\" Siegel" ; backslash is an escaping character
"Benjamin \"Bugsy\" Siegel" ; backslash is an escaping character
"Foo\tbar\41\x21\u0021\a\r\n" ; includes C escapes, Unicode
"λx:(μα.α→α).xx" ; any Unicode character can appear in a string constant
;; Strings can be added too!
@ -282,7 +283,7 @@ m ; => '#hash((b . 2) (a . 1) (c . 3))
;; looping can be done through recursion
(define (loop i)
(when (< i 10)
(printf "i:~a~n" i)
(printf "i:~a\n" i)
(loop (add1 i))))
(loop 5) ; => i:5 i:6 ...
@ -290,7 +291,7 @@ m ; => '#hash((b . 2) (a . 1) (c . 3))
;; similarly, with a named let
(let loop ((i 0))
(when (< i 10)
(printf "i:~a~n" i)
(printf "i:~a\n" i)
(loop (add1 i)))) ; => i:0 i:1 ...
;;; Comprehensions
@ -325,7 +326,7 @@ m ; => '#hash((b . 2) (a . 1) (c . 3))
(displayln i))
(for ([(k v) (in-hash (hash 'a 1 'b 2 'c 3 ))])
(printf "key:~a value:~a ~n" k v))
(printf "key:~a value:~a\n" k v))
;;; Exceptions
@ -431,7 +432,7 @@ vec ; => #(1 2 3 4)
(define a 2)
(define b 3)
(swap a b)
(printf "tmp = ~a; a = ~a; b = ~a~n" tmp a b) ; tmp is unaffected by swap
(printf "tmp = ~a; a = ~a; b = ~a\n" tmp a b) ; tmp is unaffected by swap
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; 10. Contracts