{"type":"rich","provider_name":"Hatena Blog","blog_title":"Sabrou-mal \u30b5\u30d6\u30ed\u30a6\u4e38","published":"2016-12-17 21:58:33","image_url":"http://chart.apis.google.com/chart?cht=tx&chl=2%5E%7Bn%7D","height":"190","provider_url":"https://hatena.blog","author_name":"inarizuuuushi","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finarizuuuushi.hatenablog.com%2Fentry%2F2016%2F12%2F13%2F215833\" title=\"Python  functools\u306elru_cache - Sabrou-mal \u30b5\u30d6\u30ed\u30a6\u4e38\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"Python  functools\u306elru_cache","url":"https://inarizuuuushi.hatenablog.com/entry/2016/12/13/215833","author_url":"https://blog.hatena.ne.jp/inarizuuuushi/","blog_url":"https://inarizuuuushi.hatenablog.com/","categories":[" python "],"version":"1.0","width":"100%","description":"lru_cache lru_cache\u306f\u95a2\u6570\u306e\u5f15\u6570\u3068\u8fd4\u308a\u5024\u3092\u4fdd\u5b58\u3059\u308b\u3002 from functools import lru_cache @lru_cache(maxsize=None) def fib(n): if n < 2: return n return fib(n-1) + fib(n-2) \u516c\u5f0f\u306e\u4f8b\u3002\u518d\u5e30\u7684\u306b\u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u3092\u8a08\u7b97\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u307e\u307e\u5b9f\u884c\u3059\u308b\u3068\u5446\u308c\u308b\u307b\u3069\u9045\u3044\u3067\u3059\u3002 \u5b9f\u969b\u3001\u3053\u306e\u95a2\u6570\u306bn\u3092\u6e21\u3059\u3068\u7d04 \u56de\u307b\u3069\u3053\u306e\u95a2\u6570\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u3053\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u95a2\u6570\u306e\u5f15\u6570\u3068\u3057\u3066\u305d\u306e\u307b\u3068\u3093\u3069\u304c\u3001\u904e\u53bb\u6e21\u3055\u308c\u305f\u3053\u3068\u306e\u3042\u308b\u5f15\u6570\u304c\u7e70\u308a\u8fd4\u3057\u6e21\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002 @lru_cache\u3092\u95a2\u6570\u306e\u524d\u306b\u3064\u3051\u308c\u2026"}