灯下 · SICP · Exercise 2.35

内容 2.2 Hierarchical Data and the Closure Property · 114

练习自检推理

Exercise 2.35: Redefine count-leaves from
2.2.2 as an accumulation:

(define (count-leaves t)

(accumulate ⟨??⟩ ⟨??⟩ (map ⟨??⟩ ⟨??⟩)))

练习 2.35：将第 2.2.2 节中的 count-leaves 重新定义为一个累积操作：

(define (count-leaves t)
(accumulate ⟨??⟩ ⟨??⟩ (map ⟨??⟩ ⟨??⟩)))

SICP source code scheme

Racket #lang sicp

(define (count-leaves t)
 (accumulate ⟨??⟩ ⟨??⟩ (map ⟨??⟩ ⟨??⟩)))

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Exercise 2.35 · 习题