Class2(c1);
鍦ˋS3涓綘渚濈劧鍙互榪欐牱鍐欙紝浣嗘槸AS3 涓彁渚涗簡(jiǎn)涓涓柊鐨勬搷浣滅錛?as 錛屽茍涓旀帹鑽愪嬌鐢╝s 榪涜寮哄埗杞崲錛屼笂榪扮殑渚嬪瓙鐢?as 鎿嶄綔絎﹀疄鐜板氨鏄繖鏍鳳細(xì)
c1 as Class2;
浣跨敤 as 鎿嶄綔絎︽湁鍑犱釜濂藉錛?/p>
1.瀹冪殑鏁堟灉鍜岀涓縐嶆柟娉曟槸涓鏍風(fēng)殑銆?br /> 2.濡傛灉綾誨瀷涓嶅吋瀹規(guī)棤娉曡漿鎹紝灝變細(xì)榪斿洖null錛岃屼笉鏄嚭閿欍傝繖鏍蜂綘灝卞彲浠ヨ嚜瀹氫箟閿欒鐨勬椂鍊欒鍋氫粈涔堛?br /> 3.娌℃湁榪愯鏃墮敊璇紙Run Time Error錛夋彁紺恒?/p>
涓嶈繃鏈変簺鏃跺欐垜鍦ㄤ嬌鐢?as 鐨勬椂鍊欏茍涓嶈兘杈懼埌寮哄埗杞崲鐨勭洰鐨勶紝鑰屼嬌鐢ㄧ涓縐嶆柟娉曞垯鍙互銆備負(fù)浠涔?as 鎿嶄綔絎︽湁鏃跺欎細(xì)涓嶅ソ鐢ㄥ憿錛熻繖涓棶棰樺洶鎵頒簡(jiǎn)鎴戝緢涔咃紝鐭ラ亾鏄ㄥぉ鍦∕XNA涓婂彂鐜頒簡(jiǎn)涓綃囨棩蹇?/a>錛屾墠鎭嶇劧澶ф?zhèn)熷Q氬師鏉ュ湪AS3.0綾誨簱涓渶楂樺眰綾伙紙Top Level classes錛屾墍鏈塗op Level classes鐨勫垪琛?a target="_blank">璇風(fēng)湅榪欓噷錛変箣闂磋繘琛屽己鍒惰漿鎹㈡椂錛?as 鎿嶄綔絎︽槸涓嶈搗浣滅敤鐨勩傛瘮濡傦紝鍋囧浣犳兂瑕佸皢涓涓猄tring 綾誨瀷鐨勫瓧絎︿覆 str 杞崲鎴?Number 綾誨瀷鐨勬暟瀛?num 鏃訛紝鍙兘鎯寵榪欐牱鍐欙細(xì)
num = str as Number;
榪欐牱鍐欐槸娌℃湁鐢ㄧ殑錛屼綘鍙兘閫氳繃絎竴縐嶆柟娉曟潵杈懼埌寮哄埗杞崲鐨勭洰鐨勶細(xì)
num = Number(str);
鐗瑰埆鎰熻阿raghuonflex瀵規(guī)鍋氫簡(jiǎn)璇存槑錛屼篃甯屾湜榪欎簺瀵瑰涔?fàn)Flex鐨勪漢鏈変簺鎻愮ず銆?/p>
娉細(xì)浠ヤ笂鎶宸ф垜鍙湪Flex 涓獙璇佽繃錛屾湰浜哄Flash涓紿嶄笉閫氾紝涓嶄繚璇佷篃閫傜敤浜?Flash涓殑 AS3.0 銆?/p>