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[racket/en] fix indentation and spacing (#4251)

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* Fix indentation and spacing

* One more fix
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sorawee 2021-10-23 09:46:48 -07:00 committed by GitHub
parent 1670518461
commit ed198750d4
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1 changed files with 14 additions and 13 deletions
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@ -117,16 +117,16 @@ some-var ; => 5
;; let* is like let, but allows you to use previous bindings in creating later bindings
(let* ([x 1]
[y (+ x 1)])
(* x y))
(* x y))
;; finally, letrec allows you to define recursive and mutually recursive functions
(letrec ([is-even? (lambda (n)
(or (zero? n)
(is-odd? (sub1 n))))]
[is-odd? (lambda (n)
(and (not (zero? n))
(is-even? (sub1 n))))])
(is-odd? 11))
(or (zero? n)
(is-odd? (sub1 n))))]
[is-odd? (lambda (n)
(and (not (zero? n))
(is-even? (sub1 n))))])
(is-odd? 11))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; 3. Structs and Collections
@ -413,7 +413,7 @@ m ; => '#hash((b . 2) (a . 1) (c . 3)) <-- no `d'
(loop 5) ; => i=5, i=6, ...
;; Similarly, with a named let
(let loop ((i 0))
(let loop ([i 0])
(when (< i 10)
(printf "i=~a\n" i)
(loop (add1 i)))) ; => i=0, i=1, ...
@ -441,17 +441,19 @@ m ; => '#hash((b . 2) (a . 1) (c . 3)) <-- no `d'
(for ([i (in-set (set 'x 'y 'z))])
(displayln i))
(for ([(k v) (in-hash (hash 'a 1 'b 2 'c 3 ))])
(for ([(k v) (in-hash (hash 'a 1 'b 2 'c 3))])
(printf "key:~a value:~a\n" k v))
;;; More Complex Iterations
;; Parallel scan of multiple sequences (stops on shortest)
(for ([i 10] [j '(x y z)]) (printf "~a:~a\n" i j))
(for ([i 10] [j '(x y z)])
(printf "~a:~a\n" i j))
; => 0:x 1:y 2:z
;; Nested loops
(for* ([i 2] [j '(x y z)]) (printf "~a:~a\n" i j))
(for* ([i 2] [j '(x y z)])
(printf "~a:~a\n" i j))
; => 0:x, 0:y, 0:z, 1:x, 1:y, 1:z
;; Conditions
@ -663,8 +665,7 @@ vec ; => #(1 2 3 4)
(define amount 0)
(define (deposit a) (set! amount (+ amount a)))
(define (balance) amount)
)
(define (balance) amount))
(require 'bank-account)
(deposit 5)