摘要:
特殊形式(special form):1 (lambda (<formal-parameters>) <body>)2 (let ((<var1> <exp1>)3 ...4 (<varn> <expn>))5 <body>)等价形式: 1 (define (plus4 x) (+ x 4)) 2 等价于 3 (define plus4 (lambda (x) (+ x 4))) 4 5 (let ((<var1> <exp1>) 6 ... 7 (<varn> <ex 阅读全文