racket if for loop流程控制示例代码
代码语言:racket
所属分类:其他
代码描述:racket if for loop流程控制示例代码
下面为部分代码预览,完整代码请点击下载或在bfwstudio webide中打开
#lang racket
(if #t ; test expression
"this is true" ; then expression
"this is false") ; else expression
; => "this is true"
;; In conditionals, all non-#f values are treated as true
(member 'Groucho '(Harpo Groucho Zeppo)) ; => '(Groucho Zeppo)
(if (member 'Groucho '(Harpo Groucho Zeppo))
'yep
'nope)
; => 'yep
;; `cond' chains a series of tests to select a result
(cond [(> 2 2) (error "wrong!")]
[(< 2 2) (error "wrong aga.........完整代码请登录后点击上方下载按钮下载查看















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