{"id":746,"date":"2010-06-07T19:39:01","date_gmt":"2010-06-07T10:39:01","guid":{"rendered":"http:\/\/mk.miko.jp\/blog\/?p=746"},"modified":"2011-03-05T13:19:20","modified_gmt":"2011-03-05T04:19:20","slug":"memoize%e3%81%ae%e7%94%98%e3%81%84%e7%bd%a0%e3%81%ab%e6%82%a9%e3%82%80","status":"publish","type":"post","link":"http:\/\/mk.miko.jp\/blog\/archives\/746","title":{"rendered":"memoize\u306e\u7518\u3044\u7f60\u306b\u60a9\u3080"},"content":{"rendered":"

\u3000\u3055\u3066\u3001memoize\u3067\u3042\u308b\u3002\u30e1\u30e2\u5316\u3068\u3082\u8a00\u3046\u3002\u6700\u521dmemorize\u3068\u9593\u9055\u3048\u305f\u3002
\n\u3000\u7c21\u6f54\u306b\u8a00\u3046\u3068\u3001\u91cd\u305f\u3044\u7d14\u7c8b\u95a2\u6570\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3088\u3046\u3001\u3067\u3042\u308b\u3002
\n\u3000\u5e73\u305f\u304f\u8a00\u3044\u76f4\u3059\u3068\u3001\u540c\u3058\u5f15\u6570\u3092\u5165\u308c\u308b\u3068\u5fc5\u305a\u540c\u3058\u7269\u304c\u8fd4\u3063\u3066\u304f\u308b\u3088\u3046\u306a\u95a2\u6570\u306a\u3089\u3001\u5f15\u6570\u3068\u623b\u308a\u5024\u3067\u9023\u60f3\u914d\u5217\u4f5c\u3063\u3066\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u305f\u65b9\u304c\u901f\u304f\u306a\u308b\u3053\u3068\u3082\u3042\u308b\u3088\u306d\u3001\u3067\u3042\u308b\u3002\u307e\u3042\u3001\u3084\u3063\u3066\u308b\u5185\u5bb9\u306f\u6614\u306a\u304c\u3089\u306e\u30bd\u30ec\u3067\u3042\u308b\u3002<\/p>\n

\u3000Python\u306e\u5834\u5408\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u5909\u6570\u306f\u4e00\u5ea6\u3057\u304b\u521d\u671f\u5316\u3055\u308c\u306a\u3044\u306e\u3067\u3001\u5b9f\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u5411\u3044\u3066\u3044\u308b\u3002\u3057\u304b\u3082\u4eca\u89e6\u3063\u3066\u308b\u9bd6\u74b0\u5883\u306f\u3001\u3057\u3070\u3089\u304f\u30d7\u30ed\u30bb\u30b9\u304c\u751f\u304d\u7d9a\u3051\u308b\u3002\u3082\u3061\u308d\u3093\u5909\u6570\u3082\u3002\u5b9f\u306b\u304a\u3044\u3057\u3044\u3002
\n\u3000\u3068\u3044\u3046\u308f\u3051\u3067\u3001\u91cd\u304f\u3066\u4e8b\u524d\u8a08\u7b97\u3082\u4e0d\u53ef\u80fd\u306a\u3082\u306e\u306fmemoize\u3057\u305f\u3044\u306e\u3067\u3042\u308b\u3002<\/p>\n

\u3000Python\u306b\u306f\u307e\u305f\u90fd\u5408\u306e\u3044\u3044\u3053\u3068\u306b\u3001\u30c7\u30b3\u30ec\u30fc\u30bf\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308b\u306e\u3060\u304c\u3001memoize\u3092\u30c7\u30b3\u30ec\u30fc\u30bf\u3067\u66f8\u304f\u306a\u3089\u30af\u30ed\u30fc\u30b8\u30e3\u3092\u4f7f\u3044\u305f\u3044\u6c17\u304c\u3059\u308b\u3057\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u3067\u7e1b\u3063\u305f\u5909\u6570\u3082\u9bd6\u5fdc\u7b54\u3092\u307e\u305f\u3044\u3067\u4fdd\u6301\u3055\u308c\u308b\u306e\u304b\u3044\u307e\u3044\u3061\u3088\u304f\u5206\u304b\u3089\u3093\u306e\u3067\u3001\u7d20\u76f4\u306b\u30e2\u30b8\u30e5\u30fc\u30eb\u5909\u6570\u3092\u4f5c\u3063\u3066\u3001\u91cd\u3044\u95a2\u6570\u5185\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u76f4\u63a5\u5b9f\u88c5\u3057\u305f\u3002<\/p>\n

\u3000\u30c6\u30b9\u30c8\u30e9\u30f3\u306f\u3057\u3070\u3089\u304f\u8abf\u5b50\u304c\u826f\u304b\u3063\u305f\u306e\u3060\u304c\u3001\u3069\u3046\u3082\u5177\u5408\u304c\u304a\u304b\u3057\u304f\u3001\u3057\u3070\u3089\u304f\u60a9\u3093\u3060\u672b\u306b\u3088\u3046\u3084\u304f\u554f\u984c\u70b9\u3092\u767a\u898b\u3057\u305f\u3002
\n\u3000\u4eca\u56dememoize\u3057\u305f\u95a2\u6570\u306f\u30ea\u30b9\u30c8\u3092\u8fd4\u3059\u306e\u3060\u304c\u3001Python\u306e\u30ea\u30b9\u30c8\u306e\u4ee3\u5165\u306f\u53c2\u7167\u3092\u4ee3\u5165\u3059\u308b\u3002\u623b\u308a\u5024\u3092\u5165\u308c\u305f\u5909\u6570\u3092result\u3068\u3059\u308b\u3068\u3001<\/p>\n

cache[tuple(args)] = result<\/pre>\n
\u3068\u304b<\/p>\n
cache[frozenset(kwargs.iteritems())] = result<\/pre>\n
\u3068\u304b\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u66f8\u304d\u8fbc\u3093\u3060\u5f8c\u3001<\/p>\n
return result<\/pre>\n
\u3067\u7d42\u308f\u308b\u8a33\u3060\u304c\u3001\u305d\u308c\u3092\u53d7\u3051\u53d6\u3063\u305f\u547c\u3073\u51fa\u3057\u5074\u304c\u305d\u306e\u307e\u307e\u30ea\u30b9\u30c8\u3092\u52a0\u5de5\u3059\u308b\u3068\u30a2\u30a6\u30c8\u306a\u8a33\u3067\u3042\u308b\u3002\u4f55\u3066\u3053\u3063\u305f\u3044\u3002\u9ad8\u7d1a\u8a00\u8a9e\u3089\u3057\u3044\u7f60\u3060\u306a\u3042\u3002
\n\u3000\u3064\u30fc\u304b\u3069\u3053\u3082\u304b\u3057\u3053\u3082memoize\u30c7\u30b3\u30ec\u30fc\u30bf\u3063\u3066\u3053\u3093\u306a\u611f\u3058\u306e\u5b9f\u88c5\u3070\u304b\u308a\u898b\u308b\u3093\u30b9\u3051\u3069\u3002\u3061\u304f\u3057\u3087\u3046\u6cb9\u65ad\u3057\u305f\u3002
\n\u3000\u3068\u3044\u3046\u308f\u3051\u3067\u3001<\/p>\n
cache[frozenset(kwargs.iteritems())] = list(result)<\/pre>\n
\u307f\u305f\u3044\u306a\u611f\u3058\u306b\u30b3\u30d4\u30fc\u3092\u66f8\u304d\u8fbc\u3080\u4ed5\u69d8\u306b\u3057\u305f\u3002\u76f4\u3089\u306a\u304b\u3063\u305f\u3002
\n\u3000\u307e\u3042\u8981\u3059\u308b\u306b\u3001\u3082\u3046\u4e00\u30f6\u6240\u3067\u5168\u304f\u540c\u3058\u554f\u984c\u304c\u8d77\u304d\u3066\u3044\u305f\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u306e\u6642\u3082\u30b3\u30d4\u30fc\u3092\u8fd4\u3055\u306a\u3044\u3068\u306d\uff01
\n\u3000\u3064\u30fc\u304b\u66f8\u304d\u8fbc\u307f\u3082list()\u3058\u3083\u306a\u304ftuple()\u306b\u3057\u305f\u65b9\u304c\u3044\u3044\u306a\u3002\u305d\u308c\u3067\u3082shallow copy\u3060\u304b\u3089\u3001\u968e\u5c64\u304c\u6df1\u3044\u306a\u3089deep copy\u304c\u5fc5\u8981\u3060\u306a\u3042\u3002<\/p>\n
\u3000\u307e\u3068\u3081\u308b\u3068\u3001memoize\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30a2\u30af\u30bb\u30b9\u306f\u5168\u3066immutable\u304bdeepcopy\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3001\u3063\u3066\u3053\u3068\u3060\u306a\u3002\u30ad\u30fc\u3082\u5024\u3082\u3002\u307e\u3042\u3001Python\u306e\u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc\u306fimmutable\u304c\u5143\u3005\u8981\u6c42\u3055\u308c\u308b\u304b\u3089\u3001\u5024\u3060\u3051\u6ce8\u610f\u3057\u308d\u3068\u3002
\n\u3000\u3046\u30fc\u3080\u3001\u5358\u7d14\u30df\u30b9\u3060\u3002\u53c2\u7167\u4ee3\u5165\u306a\u8a00\u8a9e\u306b\u89e6\u3063\u3066\u3053\u306a\u304b\u3063\u305f\u304b\u3089\u304b\u3002\u3080\u3057\u308d\u5024\u6e21\u3057\u306e\u30b3\u30d4\u30fc\u30b3\u30b9\u30c8\u524a\u6e1b\u306b\u5fc5\u6b7b\u3060\u3063\u305f\u3057\u306a\u2026\u3002\u307e\u3042\u3001\u53c2\u7167\u3060\u3068\u8a8d\u8b58\u3057\u3066\u308c\u3070\u5f53\u7136\u306e\u30d0\u30b0\u306a\u8a33\u3060\u304c\u3001\u62bd\u8c61\u5316\u306e\u9032\u3093\u3060\u30b3\u30fc\u30c9\u306b\u3044\u307e\u3044\u3061\u6163\u308c\u3066\u306a\u3044\u306a\u3002C++\u3068\u304b\u306f\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u30ac\u30b7\u30ac\u30b7\u66f8\u3044\u3066\u308b\u6642\u3067\u3082\u30a2\u30bb\u30f3\u30d6\u30e9\u30de\u30af\u30ed\u76ee\u7dda\u3060\u3057\u306a\u2026\u3002<\/p>\n
\u3000\u3068\u3053\u308d\u3067\u3001\u58ee\u7d76\u306b\u4e45\u3005\u306b\u300c\u308a\u306b\u3068\u304b\u300d\u3068\u304b\u30df\u30b9\u30bf\u30a4\u30d7\u3057\u3066\u61d0\u304b\u3057\u3059\u304e\u305f\u3002\u4f55\u5e74\u3076\u308a\u304b\u3068\u304b\u8003\u3048\u305f\u304f\u306a\u3044\u3082\u306e\u3067\u3042\u308b\u306a\u3042\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3000\u3055\u3066\u3001memoize\u3067\u3042\u308b\u3002\u30e1\u30e2\u5316\u3068\u3082\u8a00\u3046\u3002\u6700\u521dmemorize\u3068\u9593\u9055\u3048\u305f\u3002 \u3000\u7c21\u6f54\u306b\u8a00\u3046\u3068\u3001\u91cd\u305f\u3044\u7d14\u7c8b\u95a2\u6570\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3088\u3046\u3001\u3067\u3042\u308b\u3002 \u3000\u5e73\u305f\u304f\u8a00\u3044\u76f4\u3059\u3068\u3001\u540c\u3058\u5f15\u6570\u3092\u5165\u308c\u308b\u3068\u5fc5\u305a\u540c\u3058\u7269\u304c\u8fd4\u3063\u3066\u304f\u308b\u3088\u3046\u306a\u95a2\u6570\u306a\u3089\u3001\u5f15\u6570 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/posts\/746"}],"collection":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/comments?post=746"}],"version-history":[{"count":0,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/posts\/746\/revisions"}],"wp:attachment":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/media?parent=746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/categories?post=746"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/tags?post=746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}