浣犳槸涓嶆槸鎬诲惉璇村弽灏勫緢鎱紵

锛堟柊鎵嬪繀鐪嬶細浠婂ぉ鎵嬫妸鎵嬫暀浣犵敤鍙嶅皠閫犵伀绠紝杩樹笉鐑PU锛侊級

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鏂规硶涓€锛氬熀纭€鐗堚€斺€擜ctivator.CreateInstance

锛堥€傚悎涓存椂鐢紝浣嗗埆鍦ㄥ惊鐜噷鐜╃伀锛?/p>

csharp澶嶅埗
// 鏃犺剳鎿嶄綔涓よ娴?/span>
Type type = typeof(Student);
object obj = Activator.CreateInstance(type);

鈥?strong>鈥嬩紭鐐光€?/strong>鈥嬶細

• 浠ｇ爜閲忓皯鍒扮瑧鍑哄０
• 涓嶉渶瑕佺煡閬撴瀯閫犲嚱鏁板弬鏁?/li>

鈥?strong>鈥嬬己鐐光€?/strong>鈥嬶紙琛€娉鍛娾殸锔忥級锛?/p>

• 姣忔璋冪敤閮戒細閲嶆柊瑙ｆ瀽绫诲瀷淇℃伅
• 瀹炴祴鏁版嵁锛氬惊鐜?涓囨鑰楁椂380ms锛堢洿鎺ew鍙0.3ms锛?/li>

鈥?strong>鈥嬮€傜敤鍦烘櫙鈥?/strong>鈥嬶細閰嶇疆鏂囦欢鍔犺浇銆佸崟娆″垵濮嬪寲鎿嶄綔

鏂规硶浜岋細杩涢樁鐗堚€斺€擟onstructorInfo缂撳瓨

锛堣€佸徃鏈哄繀澶囩殑鐪佹补鎶€宸э級

csharp澶嶅埗
// 鎻愬墠缂撳瓨鏋勯€犲嚱鏁?/span>
private static readonly ConstructorInfo _studentCtor = 
    typeof(Student).GetConstructor(new[] { typeof(string) });

// 浣跨敤鏃剁洿鎺ラ杞?/span>
object obj = _studentCtor.Invoke(new object[] { "鑰佺帇" });

鈥?strong>鈥嬩紭鍖栨晥鏋溾€?/strong>鈥嬶細

• 1涓囨璋冪敤浠?80ms闄嶅埌85ms
• 鍐呭瓨鍗犵敤鍑忓皯60%

鈥?strong>鈥嬫敞鎰忕粏鑺傗€?/strong>鈥嬶細

• 鐢?code>static readonly闃叉閲嶅鍒濆鍖?/li>
• 澶嶆潅鍙傛暟绫诲瀷寤鸿棰勫厛鐢熸垚Type鏁扮粍

鏂规硶涓夛細缁堟瀬鐗堚€斺€旇〃杈惧紡鏍戠紪璇?/h3>

锛堟€ц兘鐩撮€肩洿鎺ew鐨勯獨鎿嶄綔锛?/p>

csharp澶嶅埗
// 缂栬瘧鎴愬鎵樺悗閫熷害璧烽
var param = Expression.Parameter(typeof(string));
var newExpr = Expression.New(typeof(Student).GetConstructor(new[] { typeof(string) }), param);
var lambda = Expression.Lambdastring, Student>>(newExpr, param);
Func<string, Student> creator = lambda.Compile();

// 浣跨敤鏃朵唬鐮佹竻鐖藉埌鍝?/span>
Student stu = creator("鑰佸紶");

鈥?strong>鈥嬫€ц兘鏍哥垎绾ф彁鍗団€?/strong>鈥嬶細

• 1涓囨璋冪敤浠呴渶1.2ms
• 姣旂洿鎺ew鎱笉鍒?鍊?/li>

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鐏甸瓊鎷烽棶锛氫笁绉嶆柟娉曟€庝箞閫夛紵

锛堟嬁椤圭洰缁忓巻涓句釜鏍楀瓙馃尠锛?/p>

鍘诲勾鍋氱數鍟嗕績閿€绯荤粺锛岃鍔ㄦ€佸垱寤?00绉嶄紭鎯犲埜銆傝瘯杩囦笁绉嶆柟妗堬細

1. Activator鐗?鈫?娲诲姩寮€濮嬬灛闂碈PU椋欏埌90%
2. 鏋勯€犲嚱鏁扮紦瀛?鈫?CPU缁存寔鍦?0%锛屼絾寤惰繜鏄庢樉
3. 琛ㄨ揪寮忔爲鐗?鈫?CPU 45%锛屾祦鐣呭寰疯姍

鈥?strong>鈥嬬粨璁衡€?/strong>鈥嬶細

• 浣庨鍦烘櫙鐢ㄦ柟娉曚竴
• 涓珮棰戠敤鏂规硶浜?/li>
• 鎬ц兘鏁忔劅鍨嬬敤鏂规硶涓?/li>

閬垮潙鎸囧崡锛氫簲涓鍛界殑缁嗚妭

1. 鈥?strong>鈥嬬被鍨嬪畨鍏ㄦ娴嬧€?/strong>鈥嬶細

   csharp澶嶅埗
   // 杞瀷鍓嶅繀椤诲仛绫诲瀷妫€鏌?/span>
   if(obj is Student s) s.Run();

   鍘诲勾娌″仛妫€鏌ワ紝绾夸笂鎶ラ敊"鏃犳硶灏咥pple杞垚iPhone"锛岃浜у搧缁忕悊杩芥潃涓夋潯琛?/p>

2. 鈥?strong>鈥嬭法绋嬪簭闆嗗姞杞解€?/strong>鈥嬶細

   csharp澶嶅埗
   // 鍔犺浇绗笁鏂笵LL鐨勬纭Э鍔?/span>
   Assembly asm = Assembly.LoadFrom(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "plugins.dll"));

   鐩存帴鍐欑粷瀵硅矾寰勭殑閮借寮€闄や簡

3. 鈥?strong>鈥嬬鏈夋瀯閫犲嚱鏁扮牬瑙ｂ€?/strong>鈥嬶細

   csharp澶嶅埗
   var ctor = type.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, null);

   鍗曚緥妯″紡涔熸尅涓嶄綇鍙嶅皠锛屼絾灏忓績琚灦鏋勫笀鎷夐粦

灏忕紪瑙傜偣锛堣鐐瑰悓琛屼笉鏁㈣鐨勶級

瑙佽繃鏈変汉涓轰簡鐐妧锛岃繛鍒涘缓宸茬煡绫诲瀷閮界敤鍙嶅皠鈥斺€旇繖灏卞ソ姣旂敤瀵煎脊鎵撹殜瀛愩€傗€?strong>鈥嬪弽灏勭湡姝ｇ殑浠峰€煎湪鍔ㄦ€佸満鏅€?/strong>鈥嬶紝姣斿锛?/p>

• 鎻掍欢绯荤粺鍔犺浇鏈煡绫诲瀷
• ORM妗嗘灦鏄犲皠鏁版嵁搴撳瓧娈?/li>
• 娓告垙寮曟搸鐨勭儹鏇存柊妯″潡

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