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
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#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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