{"id":7217,"date":"2015-06-02T12:33:32","date_gmt":"2015-06-01T18:33:32","guid":{"rendered":"http:\/\/www.moonmile.net\/blog\/?p=7217"},"modified":"2015-06-02T14:54:04","modified_gmt":"2015-06-02T05:54:04","slug":"datatable-%e3%82%88%e3%82%8a%e3%82%82-list-%e3%82%92%e4%bd%bf%e3%81%86%e3%81%a8-10-%e5%80%8d%e6%97%a9%e3%81%8f%e3%81%aa%e3%82%8b%ef%bc%88%e7%b6%9a%e7%b7%a8%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.moonmile.net\/blog\/archives\/7217","title":{"rendered":"DataTable \u3088\u308a\u3082 List \u3092\u4f7f\u3046\u3068 10 \u500d\u65e9\u304f\u306a\u308b\uff08\u7d9a\u7de8\uff09"},"content":{"rendered":"

\u3046\u3061\u306e\u30b5\u30a4\u30c8\u3067\u306f\u5730\u5473\u306b\u30a2\u30af\u30bb\u30b9\u6570\u304c\u591a\u3044\u30da\u30fc\u30b8\u3067\u3001<\/p>\n

\u610f\u5916\u3068\u9045\u3044 DataTable \u3001\u306a\u306e\u3067 List \u3092\u4f7f\u3046\u3068 5 \u500d\u65e9\u304f\u306a\u308b | Moonmile Solutions Blog
\nhttp:\/\/www.moonmile.net\/blog\/archives\/2228\/comment-page-1#comment-24840175301577487<\/a><\/p>\n

\u3068\u3044\u3046\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u3082\u30464\u5e74\u7a0b\u524d\u306e\u8a18\u4e8b\u3067\u3001\u696d\u52d9\u3067 VB.NET 2.0 \u3092\u4f7f\u308f\u306a\u3044\u3068\u3044\u3051\u306a\u304f\u3066\u3001LINQ \u304c\u4f7f\u3048\u306a\u304b\u3063\u305f\u306e\u3067\u3001DataTable \u306b\u3057\u3088\u3046\u304b\u3001List \u306b\u3057\u3088\u3046\u304b\u3068\u3044\u3046\u8abf\u67fb\u306e\u8a18\u9332\u3067\u3059\u3002\u4eca\u3060\u3068\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u8272\u3005\u306a\u3084\u308a\u65b9\u304c\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u3061\u3087\u3063\u3068\u30b3\u30e1\u30f3\u30c8\u3068\u304c\u4ed8\u3044\u305f\u306e\u3067\u3001\u8a08\u6e2c\u3057\u306a\u304a\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

\u25a0list \u3092\u4f7f\u3046
\n\u25a0list \u306b\u69cb\u9020\u4f53\u3092\u4f7f\u3046<\/p>\n

\u4e0a\u8a182\u3064\u306e\u30b1\u30fc\u30b9\u306b\u3064\u3044\u3066\u3001\u4ed6\u306e3\u3064\u306e\u30b1\u30fc\u30b9\u306b\u3066\u884c\u3063\u3066\u3044\u308b
\n\u300c\u3042\u3048\u3066\u6700\u521d\u306b\u884c\u3092\u8ffd\u52a0\u3057\u3066\u304a\u304f\u300d\u51e6\u7406\u306e\u8a18\u8ff0\u304c\u306a\u3044\u3088\u3046\u306b
\n\u304a\u898b\u53d7\u3051\u3057\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u5358\u306a\u308b\u8aa4\u8a18\u3067\u3042\u308a\u5b9f\u969b\u306f\u8a18\u8ff0\u306e\u4e0a
\n\u5b9f\u884c\u3055\u308c\u305f\u8a08\u6e2c\u7d50\u679c\u3068\u3044\u3046\u3053\u3068\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n

\u968f\u5206\u524d\u3060\u3063\u305f\u306e\u3067\u899a\u3048\u3066\u3044\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u304a\u305d\u3089\u304f\u6bd4\u8f03\u30b3\u30fc\u30c9\u306e\u30df\u30b9\u3067\u3059\u3002\u3042\u3089\u304b\u3058\u30811\u4e07\u884c\u3044\u308c\u3066\u304a\u3044\u305f\u306e\u306f\u300c\u66f4\u65b0\u7cfb\u300d\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u3053\u306e\u307e\u307e\u3060\u3068 list \u306e\u307b\u3046\u304c\u6709\u5229\u306b\u50cd\u304d\u307e\u3059\u3088\u306d\u3002
\n\u6c17\u306b\u306a\u3063\u305f\u306e\u3067 Go4 \u3068 Go5 \u3060\u3051\u629c\u304d\u51fa\u3057\u3066\u66f8\u304d\u76f4\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5b9f\u9a13\u30b3\u30fc\u30c9<\/h2>\n
\r\npublic partial class Form1 : Form\r\n{\r\n    public Form1()\r\n    {\r\n        InitializeComponent();\r\n    }\r\n\r\n    DataTable MakeDataTable()\r\n    {\r\n        var dt = new DataTable();\r\n        for (int i = 0; i < 100; i++)\r\n        {\r\n            dt.Columns.Add(new DataColumn("x" + i.ToString(), typeof(string)));\r\n        }\r\n        return dt;\r\n    }\r\n\r\n    double Go4()\r\n    {\r\n        var dt = MakeDataTable();\/\/  new DataTable();\r\n        \/\/ \u30c7\u30fc\u30bf\u66f4\u65b0\u30c1\u30a7\u30c3\u30af\u306e\u305f\u3081\u3001\u3042\u3089\u304b\u3058\u30811\u4e07\u884c\u3092\u4f5c\u308b\r\n        for (int i = 0; i < 10000; i++)\r\n        {\r\n            var row = dt.NewRow();\r\n            dt.Rows.Add(row);\r\n        }\r\n        \/\/ \u8a08\u6e2c\u958b\u59cb\r\n        var start = DateTime.Now;\r\n        var tm = DateTime.Now;\r\n        for (int i = 0; i < dt.Rows.Count; i++)\r\n        {\r\n            var row = dt.Rows[i];\r\n            for (int j = 0; j < 100; j++)\r\n            {\r\n                row[j] = tm.ToShortDateString(); tm.AddSeconds(1);\r\n            }\r\n        }\r\n        var tend = DateTime.Now;\r\n        var span = (tend - start).TotalSeconds;\r\n        return span;\r\n    }\r\n\r\n    double Go5()\r\n    {\r\n        var dt = new List<object>();\r\n        \/\/ \u30c7\u30fc\u30bf\u66f4\u65b0\u30c1\u30a7\u30c3\u30af\u306e\u305f\u3081\u3001\u3042\u3089\u304b\u3058\u30811\u4e07\u884c\u3092\u4f5c\u308b\r\n        for (int i = 0; i < 10000; i++)\r\n        {\r\n            var row = new object[100];\r\n            dt.Add(row);\r\n        }\r\n        \/\/ \u8a08\u6e2c\u958b\u59cb\r\n        var start = DateTime.Now;\r\n        var tm = DateTime.Now;\r\n        for (int i = 0; i < dt.Count; i++)\r\n        {\r\n            var row = dt[i] as object[];\r\n            for (int j = 0; j < 100; j++)\r\n            {\r\n                row[j] = tm.ToShortDateString(); tm.AddSeconds(1);\r\n            }\r\n        }\r\n        var tend = DateTime.Now;\r\n        var span = (tend - start).TotalSeconds;\r\n        return span;\r\n    }\r\n\r\n    \/\/\/ <summary>\r\n    \/\/\/ DataTable \u3092\u5229\u7528\r\n    \/\/\/ <\/summary>\r\n    \/\/\/ <param name="sender"><\/param>\r\n    \/\/\/ <param name="e"><\/param>\r\n    private void button1_Click(object sender, EventArgs e)\r\n    {\r\n        var t = this.Go4();\r\n        label1.Text = t.ToString();\r\n    }\r\n\r\n    \/\/\/ <summary>\r\n    \/\/\/ list \u3092\u5229\u7528\r\n    \/\/\/ <\/summary>\r\n    \/\/\/ <param name="sender"><\/param>\r\n    \/\/\/ <param name="e"><\/param>\r\n    private void button2_Click(object sender, EventArgs e)\r\n    {\r\n        var t = this.Go5();\r\n        label1.Text = t.ToString();\r\n    }\r\n}\r\n<\/pre>\n
\u3069\u3061\u3089\u3082\u30011\u4e07\u884c\u3044\u308c\u3066\u304a\u3044\u3066\u3001\u305d\u306e\u884c\u306b\u5bfe\u3057\u3066\u9010\u4e00\u30c7\u30fc\u30bf\u3092\u4fee\u6b63\u3059\u308b\u3068\u3044\u3046\u30b9\u30bf\u30a4\u30eb\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\n\u30b3\u30fc\u30c9\u306f Visual Studio 2013 \u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u5b9f\u9a13\u7d50\u679c<\/h2>\n
DataTable 8.32, 8.12, 8.12 sec
\nlist 0.88, 0.83, 0.83 sec<\/p>\n
\u3068\u3046\u5177\u5408\u306b\u3001DataTable \u3088\u308a\u3082 list \u306e\u307b\u3046\u304c 10 \u500d\u65e9\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\n\u3059\u3079\u3066\u30aa\u30f3\u30e1\u30e2\u30ea\u3067\u52d5\u304f\u305f\u3081\u306b\u3001\u5f8c\u306f CPU \u901f\u5ea6\u306e\u9055\u3044\u306b\u306a\u308b\u3068\u306f\u601d\u3046\u306e\u3067\u3059\u304c\u3001PC \u304c\u7570\u306a\u308b\u3057\uff08\u3053\u3063\u3061\u306e PC \u306e\u307b\u3046\u304c\u65ad\u7136\u65e9\u3044\u306e\u3067\uff09\u76f8\u5bfe\u7684\u306a\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002\u4ee5\u524d\u306e 4,5\u500d\u3088\u308a\u3082\u958b\u304d\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u7d76\u5bfe\u5024\u306e\u9055\u3044\u306f\u3001VB \u304c C# \u3088\u308a\u3082\u9045\u3044\u306e\u3067\u306f\u306a\u304f\u3066\u3001\u8a08\u6e2c\u3059\u308b CPU \u306e\u5dee\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3046\u3061\u306e\u30b5\u30a4\u30c8\u3067\u306f\u5730\u5473\u306b\u30a2\u30af\u30bb\u30b9\u6570\u304c\u591a\u3044\u30da\u30fc\u30b8\u3067\u3001 \u610f\u5916\u3068\u9045\u3044 DataTable \u3001\u306a\u306e\u3067 List \u3092\u4f7f\u3046\u3068 5 \u500d\u65e9\u304f\u306a\u308b | Moonmile Solutions Blog http:\/\/www.moonmile. … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-7217","post","type-post","status-publish","format-standard","hentry","category-dev"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/7217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/comments?post=7217"}],"version-history":[{"count":3,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/7217\/revisions"}],"predecessor-version":[{"id":7220,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/7217\/revisions\/7220"}],"wp:attachment":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/media?parent=7217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/categories?post=7217"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/tags?post=7217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}