ã€Java】DBã®å®šç¾©ã‚’åæ˜ ã—ãŸenumã§ã€DBã«ä¿å˜ã™ã‚‹å†…容ã¨enumã®nameãŒé£Ÿã„é•ã£ãŸå ´åˆã¸ã®å¯¾å‡¦ - QiitaDeleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article?
列挙型ã§ã¯ãªã列挙型クラスを使用ã™ã‚‹ - .NET
列挙型 (çœç•¥å½¢ã‚‚åŒã˜ 列挙型) ã¯ã€æ•´æ•°åž‹ã‚’包む薄ã„言語ラッパーã§ã™ã€‚ é–‰ã˜ãŸå€¤ã®ã‚»ãƒƒãƒˆã‹ã‚‰ 1 ã¤ã®å€¤ã‚’æ ¼ç´ã™ã‚‹ã¨ãã«ã€åˆ—挙型ã®ä½¿ç”¨ã‚’制é™ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ サイズ (å°ã€ä¸ã€å¤§) ã«åŸºã¥ã分類ã¯è‰¯ã„一例ã§ã™ã€‚ 制御フãƒãƒ¼ã¾ãŸã¯ã‚ˆã‚Šå …牢ãªæŠ½è±¡åŒ–ã®ãŸã‚ã«åˆ—挙型を使用ã™ã‚‹ã¨ã€ã‚³ãƒ¼ãƒ‰ã®è‡ã„ã«ãªã‚‹ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ ã“ã®ã‚ˆã†ãªç”¨æ³•ã¯ã€åˆ—挙型ã®å€¤ã‚’検査ã™ã‚‹å¤šãã®åˆ¶å¾¡ãƒ•ãƒãƒ¼ ステートメントã§ã¯è„†å¼±ãªã‚³ãƒ¼ãƒ‰ã«ã¤ãªãŒã‚Šã¾ã™ã€‚ 代ã‚ã‚Šã«ã€ã‚ªãƒ–ジェクト指å‘言語ã®è±Šå¯Œãªæ©Ÿèƒ½ã‚’ã™ã¹ã¦ä½¿ç”¨ã§ãる列挙型クラスを作æˆã™ã‚‹æ–¹æ³•ãŒã‚ã‚Šã¾ã™ã€‚ ãŸã ã—ã€ã“ã‚Œã¯é‡è¦ãªè©±é¡Œã§ã¯ãªãã€å¤šãã®å ´åˆã¯ã€å¥½ã¿ã«å¿œã˜ã¦ã‚ã‹ã‚Šã‚„ã™ãã™ã‚‹ãŸã‚ã«é€šå¸¸ã®åˆ—挙型を使用ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ 列挙型クラスを使用ã™ã‚‹ã¨ãƒ“ジãƒã‚¹é–¢é€£ã®æ¦‚念ã«å¯¾ã™ã‚‹é–¢é€£æ€§ãŒå¼·ããªã‚Šã¾ã™ã€‚ Enumeration 基底クラスを実装ã™ã‚‹ eShopOnContainers 内ã®
neue cc - enumã®æ—¥æœ¬èªžåˆ¥åã¨ã‹ä¸‰é …演算åãƒã‚¹ãƒˆã¨ã‹
enumã®ToStringã§æ—¥æœ¬èªžåã«ãªã£ã¦æ¬²ã—ã„ã¨ã„ã†ã‚±ãƒ¼ã‚¹ã¯ã¨ã¦ã‚‚ã‚ã‚‹ã‚る。enum ã«æ–‡å—列ã®å±žæ€§ã‚’: ã„ã’太ã®ãƒ–ãƒã‚°ã¨2008-01-24 - 当é¢C#ã¨.NETãªè¨˜éŒ²ã®è¨˜äº‹ã‚’見ã¦ã€ä»Šã¾ã§æ‹¡å¼µãƒ¡ã‚½ãƒƒãƒ‰ã§å‡¦ç†ã™ã‚‹ã“ã¨ãŒå¤šã‹ã£ãŸã®ã§ã™ãŒã€ã‚„ã£ã±ã‚Šè¦‹ãŸç›®ã¯å±žæ€§ã®ã»ã†ãŒã‚¹ãƒƒã‚リã™ã‚‹ãªã‚ã€ã¨æ€ã£ãŸã€‚記述ãŒæœ¬ä½“ã¨é›¢ã‚Œãªã„ã®ãŒè‰¯ã„ã§ã™ã‚ˆã。処ç†é€Ÿåº¦ã¨ã‹ã€ãã‚“ãªã«é »ç¹ã«ç¹°ã‚Šè¿”ã—ç¹°ã‚Šè¿”ã—呼ã¶ã‚‚ã®ã§ã‚‚ãªã„ã—リフレクション上ç‰ï¼ãれ気ã«ã—ãŸã‚‰Serializeã¨ã‹å‡ºæ¥ãªã„ï¼ã¨ã‹æ€ã£ãŸã®ã§ã€åŸºæœ¬ã¯å±žæ€§ã§å‡¦ç†ã™ã‚‹ã“ã¨ã«ã—ã¦ã¿ãŸã€‚ enum Fruit { [AliasName("ブドウ")] Grape, [AliasName("リンゴ")] Apple, [AliasName("オレンジ")] Orange } static void Main(string[] args) { var fruit = F
ES6ã§enum（列挙型）を実ç¾ã™ã‚‹ - Qiita
class HTTP_METHOD { static get get() { return HTTP_TYPE_OBJECT.get; } static get post() { return HTTP_TYPE_OBJECT.post; } static get put() { return HTTP_TYPE_OBJECT.put; } static get delete() { return HTTP_TYPE_OBJECT.delete; } get string() { switch (this) { case HTTP_TYPE.get: return 'GET'; case HTTP_TYPE.post: return 'POST'; case HTTP_TYPE.put: return 'PUT'; case HTTP_TYPE.delete: return 'DELETE
C# vs Java Enum (for those new to C#)
I've been programming in Java for a while and just got thrown onto a project that's written entirely in C#. I'm trying to come up to speed in C#, and noticed enums used in several places in my new project, but at first glance, C#'s enums seem to be more simplistic than the Java 1.5+ implementation. Can anyone enumerate the differences between C# and Java enums, and how to overcome the differences?
C#ã§ã‚¿ã‚¤ãƒ—セーフEnumパターン - ãã‚‹ãる～
C#ã§ã®ãƒ†ã‚¹ãƒˆã¯ã¡ã‚‡ã£ã¨ãŠä¼‘ã¿ã—ã¦ã€ä»Šæ—¥ã¯C#ã§ã‚¿ã‚¤ãƒ—セーフEnumパターンã®å®Ÿç¾æ–¹æ³•ã‚’ã„ãã¤ã‹ç´¹ä»‹ã™ã‚‹ã€‚ C#ã«ã¯å分ã«ã‚¿ã‚¤ãƒ—セーフãªenumãŒã‚ã‚‹ãŒã€ãã‚Œã§ã‚‚基本ã¯æ•°å€¤åž‹ã§ã‚ã‚Šã€switchã‚„ifã«ã‚ˆã‚‹åˆ†å²ãŒå¿…è¦ã«ãªã£ã¦ã—ã¾ã†ç‚¹ã¯C言語やC++ã®enumã¨ä½•ã‚‰å¤‰ã‚らãªã„。 ã¨ã„ã†ã“ã¨ã§ã€C#ã§ã‚¿ã‚¤ãƒ—セーフEnumパターンを実装ã™ã‚‹ã“ã¨ã«ã¯æ„味ãŒã‚る。もã¡ã‚ã‚“ã€C#本æ¥ã®enumã§å分ãªå ´åˆã‚‚多ã„ã®ã§ã€ä½¿ã†ã‹ä½¿ã‚ãªã„ã‹ã¯ã®åˆ¤æ–ã¯å¿…è¦ã 。 ã¾ãšã¯ã€C#ã®enumã«å¯¾ã—ã¦å…¨ã利点ã®ãªã„å˜ç´”ãªã‚‚ã®ã‹ã‚‰ã€‚ public sealed class Enum1 { private Enum1() {} public static readonly Enum1 Value1 = new Enum1(); public static readonly Enum1 Value2 = new Enum1()
neue cc - C#ã®Enumã‚’(Javaã®ã‚ˆã†ã«)別ã®å€¤ã‚’æŒãŸã›ã‚‹ãªã©æ‹¡å¼µã™ã‚‹
Enumã«æ–‡å—列を与ãˆãŸã„ã¨ã„ã†ã®ã¯å°‘ãªããªãよãã‚ã‚‹ã¨æ€ã„ã¾ã™ã€‚例ãˆã°Fruits.Appleã«ã¯.ToString()ã—ãŸã‚‰ã€Œãƒªãƒ³ã‚´ã€ã¨å‡ºã¦æ¬²ã—ã„ãªãƒ¼ã€ã¨ã‹ã€‚ãã‚Œãªã‚‰Fruits.リンゴã¨ã€æ—¥æœ¬èªžåã¤ã‘ã‚Œã°ï¼Ÿã¨ã„ã†ã®ã¯ã”ã‚‚ã£ã¨ã‚‚。ã§ã‚‚ã€åŒæ™‚ã«ã€Œæž—檎ã€ã¨ã‚‚付ã‘ãŸã„ãªãƒ¼ã€ã¨ã‹ã‚‚æ€ã£ã¦ã—ã¾ã£ãŸã‚Šã™ã‚‹ã‚ã‘ã§ã™ã€‚ã—ã¾ã›ã‚“？Java→C#ãªäººãŒä¸€ç•ªä¸æº€ã«æ€ã†ã®ã¯Enumã®ã‚ˆã†ã§ã™ã—（Javaã®Enumã¯é«˜æ©Ÿèƒ½ï¼ï¼‰ã€‚ 例ãˆã°ã“ã‚“ãªé¢¨ã«ã‹ã‘ãŸã‚‰ã„ã„ãªã€ã£ã¦ã€‚ // ã“ã†ã‚„ã£ã¦å±žæ€§å®šç¾©ã™ã‚‹ã ã‘ï¼ public enum Color { [Japanese("é»’"), Hex("000000"), Rgb(0, 0, 0)] Black, [Japanese("白"), Hex("FFFFFF"), Rgb(255, 255, 255)] White, [Japanese("赤"), Hex("FF000
c#ã®Enum拡張をもã†ã¡ã‚‡ã„楽㫠- Qiita
c#ã®Enum拡張をもã†ã¡ã‚‡ã„楽㫠ã“ã¡ã‚‰ã®è¨˜äº‹ã‚’å‚考㫠http://neue.cc/2010/11/13_285.html LINQ を使ã‚ãšã€generic ã«ã—ã¦ã¡ã‚‡ã£ã¨æ•´ç†ã—ã¦ã¿ãŸã‚„ã¤ã€‚ 拡張メソッド㯠static ã‹ã¤ non-generic ãªã‚¯ãƒ©ã‚¹ã˜ã‚ƒãªã„ã¨å®šç¾©ã§ããªã„ã®ã§ã€è¿‚回ã™ã‚‹ã—ã‹ãªã•ã’。 generic クラスもé™çš„コンストラクタ使ãˆã‚‹ã‚“ã ãªã。 LINQ を外ã—ãŸã®ã¯ã€æ›¸ã下ã—ãªãŒã‚‰æŒ™å‹•è¦‹ãŸã‹ã£ãŸã ã‘ãªã®ã§æ·±ã„æ„味ã¯ãªã„ã§ã™ã€‚ å¯èƒ½ãªã‚‰å…ƒè¨˜äº‹ã®LINQ使ã£ãŸæ–¹ãŒã„ã„ã¨æ€ã„ã¾ã™ã€‚ ã‚ã€è©¦ã—ãŸã®ã¯ unity5.02 ã§ã™ã€‚ unity 㯠.net ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ãŒå¤ã„ã‹ã‚‰ã€æ–°ã—ã„ c# ãªã‚‰ã‚‚ã†ã¡ã‚‡ã„ã„ã„方法ãŒã‚ã‚‹ã‹ã‚‚。 using System; using System.Collections.Generic; /// enum付éšãƒ‡ãƒ¼ã‚¿ã‚’ä¿æŒã™ã‚‹æ–¹ publ
Roslyn 㧠Expression ã«å«ã¾ã‚Œã‚‹ Enum ã®å€¤ãŒå–ã‚Œãªããªã£ãŸã¨æ€ã£ãŸã‚‰ãƒã‚°ã ã£ãŸ - kendik.net
例ãˆã°ã€ä»¥ä¸‹ã®ã‚³ãƒ¼ãƒ‰ã‚’ VS2013 ã§å‹•ã‹ã™ã¨æœ€çµ‚çš„ã« NumberEnum.One ã¨ã„ã†å®šæ•°ã‹ã‚‰ "1" ã¨ã„ã†å€¤ãŒå–ã‚Œã¾ã™ã€‚ class Hoge { public NumberEnum NumberEnum { get; set; } } enum NumberEnum { Zero, One } static void Main(string[] args) { Expression<Func<Hoge, bool>> expression = _ => _.NumberEnum == NumberEnum.One; var bin = (BinaryExpression) expression.Body; var r = bin.Right; var c = r as ConstantExpression; var value = c.Value; Console.Write
属性ã«è¨å®šã—ãŸenumã®å€¤ã«å¯¾å¿œã™ã‚‹æ–‡å—列をå–å¾—ã™ã‚‹ã€‚ - Qiita
ç”»é¢ã«è¡¨ç¤ºã™ã‚‹ã¨ããªã©enumã®å€¤ã‚’ãã®ã¾ã¾ã§ã¯ãªãã€ï¼ˆã‚‚ã£ã¨äººé–“判りやã™ã„よã†ã«ï¼‰å€¤ã«å¯¾å¿œã™ã‚‹æ–‡å—列を表示ã—ãŸã„ã¨ã„ã†ã“ã¨ã¯è‰¯ãã‚ã£ã¦ã€ä»¥å‰ã€enumã«æ‹¡å¼µãƒ¡ã‚½ãƒƒãƒ‰ã‚’定義ã™ã‚Œã°ã‚¹ãƒƒã‚リ書ã‘ã‚‹ã‚“ã˜ã‚ƒãªã„ã‹ã¨ã„ã†ã“ã¨ã‚’書ãã¾ã—ãŸï¼ˆC# ã® enum ã«é–¢é€£ã™ã‚‹å°æŠ€ã€‚）。 ã“ã®æ–¹æ³•ã¯å˜ç´”ã§è‰¯ã„ã¨æ€ã†ã‚“ã§ã™ãŒã€enumã®å®šç¾©ã¨å¯¾å¿œã™ã‚‹å称ã®å®šç¾©ã®å ´æ‰€ãŒé›¢ã‚Œã¦ã‚‹ã®ãŒä½•ã‹æ ¼å¥½æ‚ªã„。 ãã“ã§ã€å±žæ€§ã‚’使ãˆã°ã‚‚ã£ã¨ç¶ºéº—ã«æ›¸ã‘ã‚‹ã‚“ã˜ã‚ƒãªã„ã‹ã¨è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ 拡張メソッドã®ä¸èº«ãŒã‚„ã‚„ã“ã—ããªã‚Šã¾ã—ãŸãŒã€ã‚¸ã‚§ãƒãƒªãƒƒã‚¯ã«ã—ã¦ä½¿ã„ã¾ã‚ã—ã§ãるよã†ã«ã™ã‚Œã°è‰¯ã„ã‹ãªã€‚ using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using Syst
éžã‚¸ã‚§ãƒãƒªãƒƒã‚¯ç‰ˆ Enum.TryParse - Qiita
using System; using System.Collections.Generic; using System.Reflection; class Program { static void Main(string[] args) { object vt1; bool b1 = EnumEx.TryParse(typeof(FizzBuzz), "Buzz", out vt1); Console.WriteLine("{0} {1}", b1, vt1); object vt2; bool b2 = EnumEx.TryParse(typeof(FizzBuzz), "-", out vt2); Console.WriteLine("{0} {1}", b2, vt2); } } enum FizzBuzz { Fizz, Buzz } class EnumEx { privat
カスタムEnum.TryParse - Qiita
using System; using System.Collections.Generic; using System.Linq; using System.Reflection; class Program { static void Main(string[] args) { var enumType = typeof(FooBar); var helper = (EnumHelperBase)Activator.CreateInstance(typeof(EnumHelper<>).MakeGenericType(enumType)); TestParse(helper, ""); TestParse(helper, "Default"); TestParse(helper, "Foo"); TestParse(helper, "Bar"); TestParse(helper, "
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増田 亨． on Twitter: "ã•ã‚‰ã« enum ã®ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã€ã¤ã¾ã‚Š EnumSet ã¨ã€EnumMapã‚’ã†ã¾ã使ãˆã°ã€çŠ¶æ…‹é·ç§»ãƒ«ãƒ¼ãƒ«ã€å€¤ã®ç¯„囲ã”ã¨ã®åˆ†é¡žãƒ«ãƒ¼ãƒ«ã€é€²æ—状æ³ã®åˆ¤å®šãƒ«ãƒ¼ãƒ«ãªã©ã‚’ã€ã‚ã‹ã‚Šã‚„ã™ã記述ã§ãる。"
TypeScriptã§Enum風ã®ã‚‚ã®ã‚’ã“ã†ã‚„ã£ã¦æ›¸ã„ã¦ã¾ã™(2018/03ç¾åœ¨) - Qiita
How to add extension methods to Enums
属性を使用ã—ãŸåˆ—挙型ã®æ‹¡å¼µã¨ã‚³ãƒ¼ãƒ‰ã‚¹ãƒ‹ãƒšãƒƒãƒˆ - Qiita
FileSystemObject オブジェクトã§ãƒ•ã‚¡ã‚¤ãƒ«åã«ãƒ¯ã‚¤ãƒ«ãƒ‰ã‚«ãƒ¼ãƒ‰æ–‡å—を使用ã§ãã¾ã™ã‹ - Hey, Scripting Guy!
What's the equivalent of Java's enum in C#?
c# - C#ã®enumã§ä»»æ„ã®è˜åˆ¥åã‹ã‚‰å€¤ã‚’呼ã¶æ–¹æ³•ã‚’探ã—ã¦ã„ã¾ã™ã€‚ - スタック・オーãƒãƒ¼ãƒ•ãƒãƒ¼
Enumã®ToStringãŒé…ã„らã—ã„ã®ã§å¼æœ¨ã®åŠ›ã‚’借り㟠- Qiita
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