{"id":683,"date":"2013-03-29T11:27:23","date_gmt":"2013-03-29T02:27:23","guid":{"rendered":"http:\/\/yucchi.jp\/blog\/?p=683"},"modified":"2013-04-24T20:15:19","modified_gmt":"2013-04-24T11:15:19","slug":"lambda-%e3%81%ae%e7%bd%a0%e3%80%80%e8%a7%a3%e6%b1%ba%e7%b7%a8","status":"publish","type":"post","link":"http:\/\/yucchi.jp\/blog\/?p=683","title":{"rendered":"Lambda \u306e\u7f60\u3000\u89e3\u6c7a\u7de8"},"content":{"rendered":"<p>\u3061\u3087\u3063\u3068\u524d\u306b <a href=\"http:\/\/yucchi.jp\/blog\/?p=658\" target=\"_blank\">Lambda \u306e\u7f60<\/a> \u3068\u3044\u3046\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u66f8\u3044\u305f\u3002<\/p>\n<p>\u307e\u3041\u3001\u7d50\u679c\u306f\u5f53\u7136\u306e\u7d50\u679c\u3067\u3042\u308b\u3002<\/p>\n<p>\u305d\u3053\u3067\u3053\u306e\u554f\u984c\u3092\u7c21\u5358\u306b\u56de\u907f\u3059\u308b\u65b9\u6cd5\u3092\u8003\u3048\u3066\u307f\u305f\u3002<\/p>\n<p>\u304a\u305d\u3089\u304f\u524d\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u3054\u89a7\u306e Java \u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3055\u3093\u9054\u306f\u3059\u3067\u306b\u3054\u5b58\u3058\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u30d6\u30ed\u30b0\u306d\u305f\u3068\u3044\u3046\u3053\u3068\u3067(^_^;<\/p>\n<p>LinkedHashMap&lt;K,V&gt;<\/p>\n<p>\u3053\u308c\u3092\u4f7f\u3048\u3070\u3044\u3044\u307f\u305f\u3044\u3067\u3059\u306d\u3002<\/p>\n<p>\u9593\u9055\u3063\u3066\u305f\u3089\u512a\u3057\u304f\u3054\u6307\u6458\u304f\u3060\u3055\u3044\u307e\u305b\u3002<\/p>\n<p>\u3068\u3044\u3046\u3053\u3068\u3067\u4fee\u6b63\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<style type=\"text\/css\">\n<!--\ntable {color: #000000; background-color: #e9e8e2; font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09}\n-->\n<\/style>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">jp\\yucchi\\mylambda_2\\MyLambda_2.java<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre>\r\npackage jp.yucchi.mylambda_2;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.Collections;\r\nimport java.util.HashSet;\r\nimport java.util.LinkedHashMap;\r\nimport java.util.List;\r\nimport java.util.Map;\r\nimport java.util.Spliterator;\r\nimport java.util.concurrent.ConcurrentHashMap;\r\n\r\npublic class MyLambda_2 {\r\n    private final static int WOW = 10_000_000;\r\n\r\n    public static void main(String... args) {\r\n\/\/        Map<Integer, Integer> m = new ConcurrentHashMap<>();\r\n        Map<Integer, Integer> m = Collections.synchronizedMap(new LinkedHashMap());\r\n        for (int i = 0; i < WOW; i++) m.put(i, i);\r\n        List<Integer> root = new ArrayList<>();\r\n        m.keySet().spliterator().forEach(root::add);\r\n        List<Integer> _root = new ArrayList<>();\r\n        Spliterator<Integer> right = m.keySet().spliterator();\r\n        Spliterator<Integer> left = right.trySplit();\r\n        left.forEach(_root::add);\r\n        right.forEach(_root::add);\r\n        System.out.println(_root.size() == root.size());\r\n        System.out.println(_root.equals(root));\r\n        System.out.println(new HashSet(root).equals(new HashSet(_root)));\r\n    }\r\n}\r\n<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\u306f\u671f\u5f85\u901a\u308a\u306e\u7d50\u679c\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>run:<br \/>true<br \/>true<br \/>true<br \/>BUILD SUCCESSFUL (total time: 17 seconds)<\/p>\n<p>\u305d\u308c\u3067\u306f\u591c\u52e4\u771f\u3063\u53ea\u4e2d\u306a\u306e\u3067\u305d\u308d\u305d\u308d\u5bdd\u3088\u3046\u304b\u306a\u3002<\/p>\n<p>\u307e\u3060\u305f\u304f\u3055\u3093\u8a66\u3057\u3066\u307f\u305f\u3044\u3053\u3068\u304c\u3042\u308b\u3088\u3046\uff01\uff01<\/p>\n<p>\u305d\u308c\u3067\u306f\u3000(*&#8217;-&#8216;)\u30ce~<\/p>\n<div id=\"scid:0767317B-992E-4b12-91E0-4F059A8CECA8:4c61f1fc-c01b-4e54-a1ad-4a42712cb7f2\" class=\"wlWriterEditableSmartContent\" style=\"float: none; padding-bottom: 0px; padding-top: 0px; padding-left: 0px; margin: 0px; display: inline; padding-right: 0px\">Hatena \u30bf\u30b0: <a href=\"http:\/\/b.hatena.ne.jp\/t\/Java\" rel=\"tag\">Java<\/a><\/div>\n<div class='wp_social_bookmarking_light'>\n            <div class=\"wsbl_hatena\"><a href='\/\/b.hatena.ne.jp\/add?mode=confirm&url=http%3A%2F%2Fyucchi.jp%2Fblog%2F%3Fp%3D683&title=Lambda%20%E3%81%AE%E7%BD%A0%E3%80%80%E8%A7%A3%E6%B1%BA%E7%B7%A8' title='\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0' rel=nofollow class='wp_social_bookmarking_light_a' target=_blank><img src='http:\/\/yucchi.jp\/blog\/wp-content\/plugins\/wp-social-bookmarking-light\/public\/images\/hatena.gif' alt='\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0' title='\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0' width='16' height='12' class='wp_social_bookmarking_light_img' \/><\/a><\/div>\n            <div class=\"wsbl_facebook\"><a href='http:\/\/www.facebook.com\/share.php?u=http%3A%2F%2Fyucchi.jp%2Fblog%2F%3Fp%3D683&t=Lambda%20%E3%81%AE%E7%BD%A0%E3%80%80%E8%A7%A3%E6%B1%BA%E7%B7%A8' title='Facebook \u306b\u30b7\u30a7\u30a2' rel=nofollow class='wp_social_bookmarking_light_a' target=_blank><img src='http:\/\/yucchi.jp\/blog\/wp-content\/plugins\/wp-social-bookmarking-light\/public\/images\/facebook.png' alt='Facebook \u306b\u30b7\u30a7\u30a2' title='Facebook \u306b\u30b7\u30a7\u30a2' width='16' height='16' class='wp_social_bookmarking_light_img' \/><\/a><\/div>\n            <div class=\"wsbl_google_plus_one\"><g:plusone size=\"medium\" annotation=\"none\" href=\"http:\/\/yucchi.jp\/blog\/?p=683\" ><\/g:plusone><\/div>\n            <div class=\"wsbl_twitter\"><a href=\"https:\/\/twitter.com\/share\" class=\"twitter-share-button\" data-url=\"http:\/\/yucchi.jp\/blog\/?p=683\" data-text=\"Lambda \u306e\u7f60\u3000\u89e3\u6c7a\u7de8\" data-lang=\"ja\">Tweet<\/a><\/div>\n    <\/div>\n<br class='wp_social_bookmarking_light_clear' \/>\n","protected":false},"excerpt":{"rendered":"<p>\u3061\u3087\u3063\u3068\u524d\u306b Lambda \u306e\u7f60 \u3068\u3044\u3046\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u66f8\u3044\u305f\u3002 \u307e\u3041\u3001\u7d50\u679c\u306f\u5f53\u7136\u306e\u7d50\u679c\u3067\u3042\u308b\u3002 \u305d\u3053\u3067\u3053\u306e\u554f\u984c\u3092\u7c21\u5358\u306b\u56de\u907f\u3059\u308b\u65b9\u6cd5\u3092\u8003\u3048\u3066\u307f\u305f\u3002 \u304a\u305d\u3089\u304f\u524d\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u3054\u89a7\u306e Java \u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3055\u3093\u9054\u306f\u3059\u3067\u306b\u3054\u5b58\u3058\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u30d6\u30ed\u30b0\u306d\u305f\u3068\u3044\u3046\u3053\u3068\u3067(^_^; LinkedHashMap&lt;K,V&gt; \u3053\u308c\u3092\u4f7f\u3048\u3070\u3044\u3044\u307f\u305f\u3044\u3067\u3059\u306d\u3002 \u9593\u9055\u3063\u3066\u305f\u3089\u512a\u3057\u304f\u3054\u6307\u6458\u304f\u3060\u3055\u3044\u307e\u305b\u3002 \u3068\u3044\u3046\u3053\u3068\u3067\u4fee\u6b63\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 jp\\yucchi\\mylambda_2\\MyLambda_2.java package jp.yucchi.mylambda_2; import java.util\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[17],"class_list":["post-683","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=683"}],"version-history":[{"count":2,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/683\/revisions"}],"predecessor-version":[{"id":798,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/683\/revisions\/798"}],"wp:attachment":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=683"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}