{"type":"rich","width":"100%","version":"1.0","height":"190","description":"2 \u3064\u306e\u53e3\u5ea7\u306e\u6b8b\u9ad8\u3092\u4ea4\u63db\u3059\u308b exchange \u306f\uff0c\u76f4\u5217\u5316\u3057\u3068\u304b\u306a\u3044\u3068\u30d2\u30c9\u3044\u3053\u3068\u306b\u306a\u308b\uff0e (define (exchange account1 account2) (let ((difference (- (account1 'balance) (account2 'balance)))) ((account1 'withdraw) difference) ((account2 'deposit) difference))) \u3067\u306f\uff0c\u4e00\u5b9a\u91d1\u984d amount \u3092\u3042\u308b\u53e3\u5ea7\u304b\u3089\u4ed6\u65b9\u306e\u53e3\u5ea7\u3078\u79fb\u52d5\u3055\u305b\u308b transfer \u3092\u76f4\u5217\u5316\u3059\u308b\u5fc5\u8981\u306f\u3042\u308b\u306e\u304b\u3068\u3044\u3046\u8a71\uff0e (define (transfer from-\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkiririmode.hatenablog.jp%2Fentry%2F20080713%2Fp5\" title=\"\u554f\u984c3-44 (3.4.1  The Nature of Time in Concurrent Systems) - \u7406\u7cfb\u5b66\u751f\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://kiririmode.hatenablog.jp/","provider_name":"Hatena Blog","image_url":null,"author_url":"https://blog.hatena.ne.jp/kiririmode/","author_name":"kiririmode","blog_title":"\u7406\u7cfb\u5b66\u751f\u65e5\u8a18","categories":["SICP"],"url":"https://kiririmode.hatenablog.jp/entry/20080713/p5","title":"\u554f\u984c3-44 (3.4.1  The Nature of Time in Concurrent Systems)","provider_url":"https://hatena.blog","published":"2008-07-13 00:00:04"}