{"categories":["Scheme"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fayato.hateblo.jp%2Fentry%2F20120309%2F1331259300\" title=\"\u30de\u30c3\u30d4\u30f3\u30b0\uff1f - (define -ayalog &#39;())\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","image_url":null,"height":"190","author_name":"ayato0211","url":"https://ayato.hateblo.jp/entry/20120309/1331259300","description":"\u306a\u3093\u3068\u306a\u304f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u66f8\u3044\u3066\u307e\u3057\u305f\u3002 \u3067\u3001map\u3063\u3066\u51fa\u3066\u304d\u305f\u306e\u3067\u3061\u3087\u3063\u3068\u56f0\u60d1\u3057\u3066\u308b\u3002 \u5143\u3005Java\u89e6\u3063\u3066\u308b\u306e\u3067map\u3063\u3066\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306a\u30a4\u30e1\u30fc\u30b8\u3002map\u3068\u306f \u30ea\u30b9\u30c8\u306e\u5404\u8981\u7d20\u306b\u540c\u3058\u64cd\u4f5c\u3092\u3059\u308b\u95a2\u6570\u3067\u3059\u3002 \u64cd\u4f5c\u3092\u65bd\u3057\u305f\u30ea\u30b9\u30c8\u3092\u8fd4\u3059 map \u3068\u3001\u526f\u4f5c\u7528\u3092\u76ee\u7684\u3068\u3059\u308b for-each \u306e\uff12\u3064\u304c R5RS \u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u9ad8\u968e\u95a2\u6570 \u3089\u3057\u3044\u3067\u3059\u3002\u3063\u3066\u3053\u3068\u3067\u5b9f\u969b\u306b\u4ee5\u4e0b\u3092\u5b9f\u884c\u3002 (define (double ls) (map (lambda (x) (* x 2)) ls)) \u3053\u308c\u3063\u3066\u3064\u307e\u308a\u4e0b\u3068\u540c\u3058\u3060\u3088\u306d\uff1f (define (double2 ls) (cond ((null? ls) '()) (else\u2026","blog_url":"https://ayato.hateblo.jp/","provider_name":"Hatena Blog","title":"\u30de\u30c3\u30d4\u30f3\u30b0\uff1f","version":"1.0","author_url":"https://blog.hatena.ne.jp/ayato0211/","type":"rich","published":"2012-03-09 11:15:00","blog_title":"(define -ayalog '())","width":"100%"}