{"author_url":"https://blog.hatena.ne.jp/Mozk/","provider_url":"https://hatena.blog","categories":["R"],"published":"2009-11-18 21:05:33","url":"https://mozk-2.hatenadiary.org/entry/20091118/1258545933","image_url":null,"type":"rich","provider_name":"Hatena Blog","description":"Scheme\u3092\u4f7f\u3046\u3068\u304d\u3001\u3057\u3070\u3057\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u306a\u304b\u306b\u95a2\u6570\u3092\u9589\u3058\u8fbc\u3081\u308b\u3002 \u4f8b\u3048\u3070\u30e1\u30e2\u5316\u3057\u305f\u95a2\u6570\u3092\u4f5c\u308a\u305f\u3044\u3068\u304d\u3084\u3001\u547c\u3073\u51fa\u3057\u56de\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3067\u304d\u308b\u95a2\u6570\u3092\u4f5c\u308a\u305f\u3044\u3068\u304d\u3068\u304b\u306b\u305d\u3046\u3059\u308b\u3002 (define (a f) (lambda () (f))) (define (x) 0) (define x (a x)) (x) ;;;=> 0 R\u3067\u3082\u540c\u3058\u3088\u3046\u306b\u66f8\u3044\u3066\u307f\u305f\u6240\u3001Error\u304c\u51fa\u305f\u3002\u3069\u3046\u3084\u3089\u5f15\u6570\u304c\u9045\u5ef6\u8a55\u4fa1\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u539f\u56e0\u306e\u3088\u3046\u3060\u3002 a <- function(f){ function(){ f() } } x <- function(){ 0 } x <- a(x) x() ###=> \u30a8\u30e9\u30fc\uff1a\u2026","blog_title":"\u58ca\u308c\u305f\u8a08\u7b97\u6a5f","width":"100%","author_name":"Mozk","version":"1.0","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmozk-2.hatenadiary.org%2Fentry%2F20091118%2F1258545933\" title=\"\u9045\u5ef6\u30b3\u30ef\u3044 - \u58ca\u308c\u305f\u8a08\u7b97\u6a5f\" 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://mozk-2.hatenadiary.org/","title":"\u9045\u5ef6\u30b3\u30ef\u3044"}