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Merge pull request #579 from levibostian/racket-typos

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Fix Racket typos.
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Levi Bostian 2014-03-20 12:40:54 -05:00
commit 90ee70b3e3
1 changed files with 4 additions and 4 deletions
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@ -196,7 +196,7 @@ my-pet ; => #<dog>
(hash-ref m 'd 0) ; => 0 (hash-ref m 'd 0) ; => 0
;; Use `hash-set' to extend an immutable hash table ;; Use `hash-set' to extend an immutable hash table
;; (Returns the extended hash instdead of mutating it) ;; (Returns the extended hash instead of mutating it)
(define m2 (hash-set m 'd 4)) (define m2 (hash-set m 'd 4))
m2 ; => '#hash((b . 2) (a . 1) (d . 4) (c . 3)) m2 ; => '#hash((b . 2) (a . 1) (d . 4) (c . 3))
@ -224,7 +224,7 @@ m ; => '#hash((b . 2) (a . 1) (c . 3)) <-- no `d'
(define hello-world (lambda () "Hello World")) (define hello-world (lambda () "Hello World"))
(hello-world) ; => "Hello World" (hello-world) ; => "Hello World"
;; You can shorten this using the function definition syntatcic sugae: ;; You can shorten this using the function definition syntactic sugar:
(define (hello-world2) "Hello World") (define (hello-world2) "Hello World")
;; The () in the above is the list of arguments for the function ;; The () in the above is the list of arguments for the function
@ -496,7 +496,7 @@ vec ; => #(1 2 3 4)
;; 8. Classes and Objects ;; 8. Classes and Objects
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Create a class fish% (-% is idomatic for class bindings) ;; Create a class fish% (-% is idiomatic for class bindings)
(define fish% (define fish%
(class object% (class object%
(init size) ; initialization argument (init size) ; initialization argument
@ -552,7 +552,7 @@ vec ; => #(1 2 3 4)
(set! i (add1 i)))) (set! i (add1 i))))
;; Macros are hygienic, you cannot clobber existing variables! ;; Macros are hygienic, you cannot clobber existing variables!
(define-syntax-rule (swap! x y) ; -! is idomatic for mutation (define-syntax-rule (swap! x y) ; -! is idiomatic for mutation
(let ([tmp x]) (let ([tmp x])
(set! x y) (set! x y)
(set! y tmp))) (set! y tmp)))