diff options
| -rw-r--r-- | racket.html.markdown | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/racket.html.markdown b/racket.html.markdown index eddc00bf..6abc8759 100644 --- a/racket.html.markdown +++ b/racket.html.markdown @@ -196,7 +196,7 @@ my-pet ; => #<dog> (hash-ref m 'd 0) ; => 0 ;; 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)) 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")) (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") ;; 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 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; -;; Create a class fish% (-% is idomatic for class bindings) +;; Create a class fish% (-% is idiomatic for class bindings) (define fish% (class object% (init size) ; initialization argument @@ -552,7 +552,7 @@ vec ; => #(1 2 3 4) (set! i (add1 i)))) ;; 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]) (set! x y) (set! y tmp))) |