锘??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲精品在线视频观看,国产精品免费一区二区三区观看,国产亚洲高清视频http://www.shnenglu.com/huaxiazhihuo/category/20583.htmlzh-cnTue, 10 May 2016 23:08:37 GMTTue, 10 May 2016 23:08:37 GMT60娑堟伅鍙戦佹潅璋?/title><link>http://www.shnenglu.com/huaxiazhihuo/archive/2016/05/10/213491.html</link><dc:creator>鍗庡涔嬬伀</dc:creator><author>鍗庡涔嬬伀</author><pubDate>Tue, 10 May 2016 14:40:00 GMT</pubDate><guid>http://www.shnenglu.com/huaxiazhihuo/archive/2016/05/10/213491.html</guid><wfw:comment>http://www.shnenglu.com/huaxiazhihuo/comments/213491.html</wfw:comment><comments>http://www.shnenglu.com/huaxiazhihuo/archive/2016/05/10/213491.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/huaxiazhihuo/comments/commentRss/213491.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/huaxiazhihuo/services/trackbacks/213491.html</trackback:ping><description><![CDATA[<div>      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style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>scheme涓嬬殑鍋滄満闂鍜孻緇勫悎瀛?/title><link>http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/11/201689.html</link><dc:creator>鍗庡涔嬬伀</dc:creator><author>鍗庡涔嬬伀</author><pubDate>Thu, 11 Jul 2013 06:48:00 GMT</pubDate><guid>http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/11/201689.html</guid><wfw:comment>http://www.shnenglu.com/huaxiazhihuo/comments/201689.html</wfw:comment><comments>http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/11/201689.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://www.shnenglu.com/huaxiazhihuo/comments/commentRss/201689.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/huaxiazhihuo/services/trackbacks/201689.html</trackback:ping><description><![CDATA[<div><div>        鐪嬭繃鐨勮綆楁満涔︿腑錛宻cheme鐩稿叧鐨勯偅鍑犳湰錛屽ソ姣擲ICP錛宼he essence of program閮藉緢璁╂垜鐖變笉閲婃墜銆傝宼he little schemer鏇村姞鐙壒錛岀紪紼嬬殑鏈川錛屽湪榪欐湰涔﹀皬浜轟功涓婁綋鐜板緱娣嬫紦灝借嚧銆傜獌浠ヤ負錛宻cheme鏄娉曞艦寮忎笂鏈涓哄畬緹庣殑緙栫▼璇█浜嗭紝娌℃湁涔嬩竴銆傚皯鍗蟲槸澶氾紝榪欐牱鐨勮禐緹庝箣璦錛屽敮鏈塻cheme褰撲箣鏃犳劎錛屽茍涓斿畠鐨勭‘鏄簿綆寰椾笉鑳藉啀綺劇畝浜嗐傝嚦浜庨偅涓嚜鍚硅嚜鎿傜殑浠涔堢嫍璇█錛屼笉鎻愪篃緗€傚綋鐒訛紝瀹岀編騫朵笉涓瀹氫唬琛ㄥ疄鐢紝涔熷茍涓嶄竴瀹氬繀欏繪祦琛岋紝鏇查珮涓鍚戦兘鏄拰瀵$殑錛屼絾鏄紝瀹岀編鍗翠竴瀹氬彲浠ュ甫鏉ヨ祻蹇冩偊鐩埇鐨勬劅鍙椼?/div>        the little schemer鍏ㄤ功琛屼簯嫻佹按錛岄愭笎鏄鵑湶閫掑綊鐨勫▉鍔涳紝鍋氳凍浜嗛摵鍨紝鍒頒簡絎?绔狅紝鐪熷懡澶╁瓙lambda鍑虹幇錛屼竴鍒囧彉寰楀緢鏈夋剰鎬濅簡錛岃瀹屼箣鍚庯紝鎰忕姽鏈敖銆傜9绔狅紝闅懼害闄″錛岀獊鐒跺彉寰楃悊璁烘ц搗鏉ワ紝閭f槸鑷劧鐨勩傚洜涓猴紝榪欎竴绔犵殑涓婚鏄仠鏈洪棶棰樺拰Y緇勫悎綆楀瓙銆備笉寮曞叆浠諱綍褰㈠紡鍖栫殑鏂規硶錛屼絾鏄綔鑰呬婦閲嶈嫢杞伙紝渚濈劧闃愰噴寰楀姝ょ洿鐧芥槗鎳傦紝鍙互璇達紝鍙鑳界湅瀹屽墠闈㈢殑鍐呭錛屽氨涓瀹氳兘鐪嬫噦榪欎竴绔犮傝屽墠鍏珷錛屾嵁璇?宀佷互涓婄殑鍎跨閮借兘鐪嬪緱鏄庣櫧銆?br /><div><div><div>        scheme涓殑鍑芥暟鏄痜irst class錛屽彲浠ヤ綔涓哄弬鏁頒紶閫掔粰鍏朵粬鍑芥暟錛屼篃鍙互浣滀負鍊間粠鍑芥暟涓繑鍥炪傛瘮濡傦紝騫夸負嫻佷紶鐨勪竴閬撶▼搴忥紝鐢ㄤ互鑰冨療璇█鐨勮〃杈捐兘鍔涳紝“緙栧啓涓涓嚱鏁幫紝鍏跺叆鍙傛暟涓簄錛岃繑鍥炲間負鏂扮殑鍑芥暟錛岃鍑芥暟鐨勫弬鏁頒負x錛岃繑鍥炲間負涔嬪墠鐨刵涓庣幇鍦ㄧ殑x鐨勫拰銆?#8221;鐢╯cheme鏉ヨ〃杈撅紝鐗涘垁灝忚瘯銆?/div><div><span style="color: #ff9900;">(define (addn n)</span><br /><span style="color: #ff9900;">  (lambda (x)</span><br /><span style="color: #ff9900;">    (+ x n)))</span><br />鐒跺悗錛屽浜?(addn 20) 30)錛宻cheme瑙i噴鍣ㄤ笂鏄劇ず鍏剁粨鏋滀負50錛屽緢濂姐傜浉姣斾簬閭d釜lisp鐨勭増鏈紝榪欓噷鏄懼緱澶氫箞鐨勫共鍑銆?br /><div>        鍑芥暟寮忕殑璇█瀵瑰壇浣滅敤錛坰ide effect錛夊緢鏁忔劅錛岀壒鍒槸haskell錛屾洿鍔犲鍓綔鐢ㄨ刀灝芥潃緇濓紝鍘嬫牴灝變笉璁╁啓鍑烘湁鍓綔鐢ㄧ殑鍑芥暟銆傚洜姝わ紝姝e父鎯呭喌涓嬶紝鍑芥暟鎵ц瀹屾瘯錛岄兘鏈夎繑鍥炲箋傚ソ姣旓紝……錛屾諱箣寰堝灝辨槸錛屾甯哥殑鍑芥暟錛岄兘鍙О涔嬩負total functions錛屾剰鎬濆氨鏄鎵鏈夌殑鍙傛暟錛岄兘浼氭湁榪斿洖緇撴灉銆備絾鏄紝涔熻繕瀛樺湪涓浜涚梾鎬佸嚱鏁幫紝瀹冧滑涓嶄細榪斿洖錛屼竴鏃﹁皟鐢ㄥ畠錛岄偅涔堝皢闄峰叆涓庡叾涓紝姘歌繙閮戒笉浼氳繑鍥炰簡錛屾樉鐒訛紝閲岄潰鍑虹幇姝誨驚鐜簡錛屼絾鏄紝scheme涓病鏈夊驚鐜鍙ワ紝鎵浠ヤ笉鑳借繖涔堣錛屾諱箣錛岃繖涓綾繪槸涓嶄細鏈夎繑鍥炲肩殑銆傚緢杞繪槗灝辮兘鍐欏嚭涓涓緥瀛愩?br /><div><span style="color: #ff9900;">(define eternity</span><br /><span style="color: #ff9900;">  (lambda (x)</span><br /><span style="color: #ff9900;">    (eternity x)))</span><br /><div>eternity涓轟笉鏈界殑鎰忔濄?br />        鑷劧灝辨湁榪欐牱鐨勯棶棰橈紝鑳藉惁瀹炵幇榪欐牱鐨勫嚱鏁幫紝瀹冭兘鍒ゆ柇鍑芥暟鏄惁緇堝皢榪斿洖錛屾垨鑰呰錛屽垽鏂嚱鏁頒細涓嶄細鍋滄銆傝繖涓嚱鏁頒綔鐢ㄥ彲澶т簡錛屽綋鐒朵笉浼氶偅涔堝鏄撳疄鐜般備笉榪囷紝鍙互鍏堝亣璁懼畠瀛樺湪錛屽氨鍙畠will-stop?錛堝埆鎯婅錛宻cheme涓紝鏍囪瘑絎︿腑鍙互鏈?-*絳夌壒孌婄鍙鳳級銆傚洜姝わ紝瀵逛簬浠諱綍鍑芥暟錛?will-stop? afunction)琛ㄨ揪寮忕殑鍊鹼紝瑕佷箞涓?t錛岃〃紺哄嚱鏁癮function緇堝皢鍋滄榪斿洖錛涜涔堜負#f錛屽垯鍑芥暟涓嶄細鍋滄錛屽ソ姣攅ternity銆傛樉鐒訛紝璁﹚ill-stop?鍒ゆ柇鑷繁錛?will-stop? will-stop?)鐨勭粨鏋滀竴瀹氭槸#t浜嗐?br />        浣嗘槸錛寃ill-stop?鏄笉鍙兘瀛樺湪鐨勶紝榪欎笉鏄簾璇濆悧錛屽湴鐞冧漢閮界煡閬撱傚洜涓鴻綆楁満瀛﹀綺懼績鏋勯犱簡涓涓弽渚嬶紝姝ゅ弽渚嬪疄鍦ㄥ閥濡欙紝鐪熼毦浠ユ兂璞″綋鍒濇槸濡備綍鏋勯犲嚭鏉ワ紝鎴戠瓑灝忔皯鍙渶鐞嗚В鍗沖彲銆傝鐪嬩唬鐮?br /><div><span style="color: #ff9900;">(define (last-try x)</span><br /><span style="color: #ff9900;">  (and (will-stop? last-try) (eternity x)))</span><br />last-try錛屽ソ鍚嶅瓧錛屽氨鍙畠鏈鍚庝竴鍑誨惂銆?will-stop? last-try)鐨勭粨鏋滀笉澶栦箮#t鎴?f銆?br />        鍋囧涓?f錛岃鏄巐ast-try涓嶄細榪斿洖錛屾剰鍛崇潃鏈夋寰幆錛屼笉浼氬仠姝€備絾鏄紝涓鑰冨療last-try鐨勫唴閮ㄥ疄鐜幫紝鍗村緢瀹規槗灝辯煡閬撳畠椹笂灝辮繑鍥炰簡銆傝〃杈懼紡(and (will-stop? last-try) (eternity '()))涓紝鐢卞亣璁懼彲鐭?will-stop? last-try)涓?f錛岃繘鑰岄┈涓婂彲鐭ワ紝(and (will-stop? last-try) (eternity '()))椹笂蹇呭皢榪斿洖#f錛屼篃灝辨槸璇達紝铏界劧涓寮濮嬪亣璁緇ast-try涓嶄細鍋滄錛屼絾瀹為檯榪愯涓璴ast-try涓涓嬪瓙灝辮繑鍥炰簡錛岀煕鐩俱?br />        鐪嬫牱瀛愶紝(will-stop? last-try)鍙ソ涓?t浜嗐傚彲鏄紝(and (will-stop? last-try) (eternity '()))錛宎nd琛ㄨ揪寮忕殑涓や釜鍒嗘敮涓紝鏃㈢劧(will-stop? last-try)涓?t錛岄偅涔堬紝鍔垮繀瑕佽繘涓姝ヨ皟鐢?eternity '())錛岃宔ternity鑰佺埛錛屼竴鏃╁氨鐭ラ亾浠栦箖涓嶆溄涔嬭韓浜嗭紝鍥犳錛宭ast-try涔熸簿鍏夛紝涓鏍蜂笉鏈戒簡銆備笌鍋囪涓?will-stop? last-try)涓?t涓虹粓灝嗗仠姝紝鍙堟槸鐭涚浘銆?/div><div>        鍥犳錛寃ill-stop?鎺ュ彈涓嶄簡last-try鐨勬寫鎴橈紝澶辮觸銆備篃灝辨槸璇達紝will-stop?榪欐牱鐨勫嚱鏁幫紝涓嶅瓨鍦ㄣ傝繖閬撳弽渚嬬殑楂樻槑涔嬪錛屾垨鑰呰鑰嶈禆鍚э紝灝辨槸浠ill-stop?涓哄熀紜鏋勯犱簡涓涓獁ill-stop?鏃犳硶鍒ゆ柇鐨勫嚱鏁般傚亣濡傝瀹氾紝鎵鏈夎媯嫻嬪嚱鏁伴兘涓嶅緱鐩存帴闂存帴鐨勮皟鐢╳ill-stop?錛屽厤寰梬ill-stop?闅懼牚錛岄偅涔堣繖鏍風殑will-stop?鑳藉惁瀛樺湪鍛紵瀛樹笉瀛樺湪錛屾垜灝變笉鐭ラ亾浜嗭紝浣嗕韓鍙楁寰呴亣鐨刌緇勫悎瀛愬嵈鏄瓨鍦ㄧ殑銆?br />        鍑芥暟鐩存帴鎴栭棿鎺ヨ皟鐢ㄥ埌瀹冭嚜宸憋紝閫掑綊灝變駭鐢熶簡銆傞棶棰樻潵浜嗭紝鍑芥暟浣犺嚜宸遍兘榪樻病瀹炵幇瀹屾瘯錛屾庝箞灝卞彲浠ヨ嚜宸辨嬁鏉ヨ皟鐢ㄥ憿錛熻繖涓繃紼嬩腑錛岀紪璇戝櫒瑙i噴鍣ㄨ偗瀹氬仛浜嗘煇浜涜涔変笂澶勭悊錛岃閫掑綊寰椾互瀹炵幇銆傞昏緫瀛︿腑錛屽浜庝笅瀹氫箟鐨勮姹傛槸“涓嶅緱寰幆”錛屽ソ姣旓紝鐧借壊灝辨槸涓縐嶇櫧鑹茬殑棰滆壊錛岃繖縐嶅簾璇濆畾涔夊氨涓嶇鍚堜笅瀹氫箟鐨勫熀鏈姹備簡銆?br />        涓嬮潰鏉ュ皢涓鏉$粡鍏哥殑閫掑綊鍑芥暟鏁存垚闈為掑綊鐨勭増鏈倀he little schemer鐨勬帹瀵兼濊礬闈炲父嫻呮樉鏄撴噦錛屾垜涓嶈兘鍋氱殑鏇村ソ鐨勪簡錛屽洜姝ゅ熺敤銆?/div><div><span style="color: #ff9900;">(define length</span><br /><span style="color: #ff9900;">  (lambda (l)</span><br /><span style="color: #ff9900;">    (cond ((null? l) 0)</span><br /><span style="color: #ff9900;">      (else (+ 1 (length (cdr l)))))))</span><br />鍑芥暟length涓紝铏界劧璋冪敤鍒頒簡鑷繁錛屽疄闄呬笂錛屽叾瀹炲彧鏄皟鐢ㄤ簡涓涓悓鏍峰悕瀛楃殑鍑芥暟鑰屽凡銆傛剰鍛崇潃錛宭ength鐨勫疄闄呬笂鐨刲ambda琛ㄨ揪寮忥紝鑳屽湴閲屽甫澶氫簡涓涓弬鏁幫紝姝ゅ弬鏁頒負鍑芥暟錛岀敤浠ュ綋鍏ュ弬l涓嶄負絀烘椂鏉ヨ繘琛屼嬌鐢ㄣ傚洜姝わ紝鍙互灝嗘暣涓嚱鏁扮殑瀹氫箟鏀瑰啓鎴愪笅闈㈢殑lambda琛ㄨ揪寮忋?br /><span style="color: #ff9900;">(lambda (length)</span><br /><span style="color: #ff9900;">  (lambda (l)</span><br /><span style="color: #ff9900;">    (cond ((null? l) 0)</span><br /><span style="color: #ff9900;">      (else (+ 1 (length (cdr l)))))))</span><br />lambda琛ㄨ揪寮忕殑榪斿洖鍊間負涓涓嚱鏁幫紝褰撶劧娌℃湁鍚嶅瓧浜嗐傚畠鐨勫叆鍙備負涓鍑芥暟錛岃繑鍥炰竴涓柊鐨勫嚱鏁幫紝姝ゆ柊鍑芥暟鐨勫叆鍙傛槸鍒楄〃錛岃繑鍥炲垪琛ㄧ殑闀垮害銆備負浜嗕究浜庡悗鏂囧彊榪板紩鐢紝灝辯敤define緇欏畠璧蜂釜鍚嶅瓧錛屽彨mk-length銆備粈涔堬紝榪炵敤define璧峰悕瀛楅兘涓嶄細錛屾病鏁戜簡銆?br />        mk-length涓嶆槸闇瑕佸嚱鏁板叆鍙傚悧錛熷垰濂芥墜澶存湁涓涓紝灝辯敤瀹冭嚜宸辨湰韜紝((mk-length mk-length) '())錛岃В閲婂櫒榪斿洖0錛屽お濂戒簡銆傜劧鍚庯紝鎴戞弧鎬甯屾湜鐨勭敤((mk-length mk-length) '(a))鏉ユ祴璇曪紝緇撴灉錛岃В閲婂櫒鎶ラ敊浜嗭紝涓轟粈涔堬紵紼嶅井涓鎯籌紝灝辨槑鐧戒簡銆?mk-length mk-length)鐨勭‘榪斿洖璁$畻鍒楄〃闀垮害鐨勫嚱鏁幫紝浣嗘槸錛屽綋鍒楄〃涓嶄負絀烘椂錛屽彧濂界敤琛ㄨ揪寮?+ 1 (length (cdr l)))鍋氳繘涓姝ュ鐞嗭紝閲岄潰鐨刲ength灝辨槸mk-length錛岃宮k-length鐨勫叆鍙傛槸鍑芥暟錛屼笉鏄垪琛紝浜庢槸瑙i噴鍣ㄥ氨鎶ラ敊浜嗐傛庝箞鍔烇紵<br />        褰撶劧錛岃璁$畻闀垮害涓轟笉澶т簬1鐨勫垪琛ㄧ殑闀垮害錛岃繕鏄湁鍔炴硶鐨勩傚氨鏄紝((mk-length (mk-length mk-length)) '(a))錛岃繖鏍峰氨濂戒簡銆傝嚜鐒訛紝褰撳垪琛ㄥぇ浜?鏃訛紝瑙i噴鍣ㄥ繀鐒跺張灝嗘姤閿欎簡銆傛寜鐓ф娉曪紝涓烘錛屼負浜嗘眰寰椾笉澶т簬N涓厓绱犵殑鍒楄〃闀垮害錛屽繀欏誨皢mk-length鍐橬嬈★紝濂芥瘮錛?br /><span style="color: #ff9900;">((mk-length</span><br /><span style="color: #ff9900;">  (mk-length</span><br /><span style="color: #ff9900;">   (mk-length (...))))</span><br /><span style="color: #ff9900;"> '(a b c d ...))</span><br />騫朵笖錛岃緵杈涜嫤鑻︾殑閲嶅鍐橬閬峬k-length錛屽彧鑳借綆椾釜鏁頒笉澶т簬N鐨勫垪琛ㄧ殑闀垮害銆傝繖錛屾棤璁哄浣曢兘涓嶈兘璁╃▼搴忕尶鎺ュ彈銆?br />閭d箞錛屼負浣曡鍐欓偅涔堝(mk-length (mk-length (mk-length...)))錛岀殕鍥爉k-length涓?+ 1 (length (cdr l)))鐨刲ength鍑芥暟鎺ユ敹鐨勫嚱鏁板弬鏁版槸鍒楄〃l銆傚厛鏆傛椂璁╁畠閫傚簲鐜錛屽氨璁╁畠鐭ラ亾瀹冩帴鏀剁殑length鍙傛暟鏄竴涓窡瀹冭嚜宸辨湰韜殑lambda琛ㄨ揪涓鏍鳳紝鏄叆鍙備負鍑芥暟錛岀劧鍚庤繑鍥炰竴涓綆條ist闀垮害鐨勫嚱鏁般傚皢mk-length鏀瑰啓鎴愯繖鏍楓?br /><span style="color: #ff9900;">(define mk-length</span><br /><span style="color: #ff9900;">  (lambda (length)</span><br /><span style="color: #ff9900;">    (lambda (l)</span><br /><span style="color: #ff9900;">      (cond ((null? l) 0)</span><br /><span style="color: #ff9900;">        (else (+ 1 ((length length) (cdr l))))))))</span><br />璇鋒敞鎰忥紝浠g爜閲岄潰宸茬粡涓嶅瓨鍦ㄩ掑綊褰㈠紡浜嗭紝鍥犱負錛宮k-length鐨刲ambda琛ㄨ揪寮忎腑錛屾病鏈夌敤鍒癿k-length榪欎釜鍚嶅瓧浜嗭紝褰撶劧錛屽畠榪樿鐢ㄥ埌鍏ュ弬length浠ヨ綆楀綋l涓嶄負絀烘椂鐨勯暱搴︺傚啀嬈℃姳鐫璇曡瘯鐪嬬殑鎬佸害錛岄獙璇侊紝((mk-length mk-length) '(a))錛岃繑鍥?錛岀湡鐨勫彲浠ヤ簡銆傛嬁鏇撮暱鐨勫垪琛ㄤ涪榪涘幓錛岄暱搴︿負2錛屼負3錛屼負N+1錛岄兘OK浜嗭紝鐪熸槸紲炲銆?/div><div>        瀹冪殑宸ヤ綔鍘熺悊鏄紝鏁呬簨涓寮濮嬶紝(mk-length mk-length)鐢熸垚涓涓綆楀垪琛ㄩ暱搴︾殑鍑芥暟錛屽湪鍏跺唴閮ㄤ腑錛屽亣濡傚垪琛╨涓虹┖錛屽氨榪斿洖闀垮害涓?錛涘惁鍒欙紝灝辮綆條鐨勫熬閮ㄩ暱搴︼紝騫跺姞涓婂ご緇撶偣鐨勯暱搴?錛岃岃綆條鐨勫熬閮ㄧ殑鍑芥暟錛屾槸閫氳繃(length length)鏉ョ敓鎴愶紝鍏朵腑length灝辨槸mk-length錛屾晠浜嬪氨鍥炲埌鍘熺偣(mk-length mk-length)浜嗭紝鍙槸錛屽叾榪斿洖鍊煎湪澶栧洿涓鍔?浜嗭紝鐒跺悗錛屽湪鏇村鍥翠腑緇х畫鍔?錛屽姞1錛?#8230;…銆?br />浣嗘槸錛屽伐浣滆繕娌℃湁瀹屾垚錛屽洜涓猴紝mk-length涓紝((length length) (cdr l))寰堝埡鐪鹼紝瀹冨簲璇ユ槸(length (cdr l))榪欐牱鐨勫艦寮忋傞噸鏋勶紝蹇呴』閲嶆瀯銆傚繀欏誨湪灝嗗叾鎻愮偧鎴愪竴涓嚱鏁幫紝鍥犳錛宮k-length灝卞彉鎴?br /><span style="color: #ff9900;">(define mk-length</span><br /><span style="color: #ff9900;">  (lambda (length-mk)</span><br /><span style="color: #ff9900;">    ((lambda (length)</span><br /><span style="color: #ff9900;">    (lambda (l)</span><br /><span style="color: #ff9900;">      (cond ((null? l) 0)</span><br /><span style="color: #ff9900;">        (else (+ 1 (length (cdr l)))))))</span><br /><span style="color: #ff9900;">     (lambda (x)</span><br /><span style="color: #ff9900;">       ((length-mk length-mk) x)))))</span><br />浠g爜浼間箮鍙樺緱澶嶆潅浜涗簡錛屼絾鏁堟灉鏄竴鏍鳳紝騫朵笖錛岃娉曠粨鏋勪笂鍩烘湰淇濇寔涓鑷淬備絾鏄唬鐮佸ソ鍍忕殑紜彉寰楁洿闀夸簡錛岃繖涔熸病鍔炲彂錛屼負浜嗕繚鎸佹渶鍐呴儴length鐨勭函媧佹с備絾鏄紝瀹冧篃澶繁浜嗭紝浣滀負閲嶇偣錛屽簲璇ユ斁鍦ㄥ闈紝鍡紝搴旇灝嗕袱涓猯ambda瀵硅皟涓涓嬨?br /><span style="color: #ff9900;">(define mk-length</span><br /><span style="color: #ff9900;">  (lambda (length-mk)</span><br /><span style="color: #ff9900;">    ((lambda (length)</span><br /><span style="color: #ff9900;">       (length (lambda (x)</span><br /><span style="color: #ff9900;">         ((length-mk length-mk) x))))</span><br /><span style="color: #ff9900;">     (lambda (length)</span><br /><span style="color: #ff9900;">       (lambda (l)</span><br /><span style="color: #ff9900;">     (cond ((null? l) 0)</span><br /><span style="color: #ff9900;">           (else (+ 1 (length (cdr l))))))))))</span><br />闈㈠鐫榪欎箞澶氱殑lambda錛屽疄鍦ㄩ毦浠ユ貳瀹氥備絾蹇呴』鎺ユ敹媧楃ぜ錛屾柟鍙綋浼氬埌鍑芥暟浣滀負涓絳夊叕姘戯紝鎵甯︽潵鐨勫己鎮嶇殑琛ㄨ揪鑳藉姏錛岀畝鐩磋兘鎾炵牬涔犳儻鍛戒護寮忕紪紼嬬殑鐪肩悆銆傞噷闈㈢殑lambda(length)鍙堝彉鍥炲師鏉ョ殑鏍峰瓙錛屼絾鏄紝mk-length鐨勪富浣撳凡緇忎笉鍐嶆槸瀹冧簡錛岃屾槸涓涓互鐨刲ambda(length)涓哄弬鏁扮殑lambda浜嗐備負浜嗕繚鎸乵k-length鐨勭函媧侊紝緇х畫鍔姏錛岃繖涓嬈★紝鏄湪涓や釜(mk-length mk-length)涓婂仛鏂囩珷錛屾瘡嬈¢兘瑕佸啓涓や釜鐩稿悓鐨勫嚱鏁幫紝涓嶅鎶婂畠鍋氭垚鍑芥暟銆備簨鎯呭埌浜嗚繖涓姝ワ紝Y緇勫悎瀛愬凡鍛間箣嬈插嚭銆?br /><span style="color: #ff9900;">(define Y</span><br /><span style="color: #ff9900;">  (lambda (f)</span><br /><span style="color: #ff9900;">    (f f)))</span><br /><span style="color: #ff9900;">((Y mk-length) '(a b c d e))    ;榪斿洖5</span><br />鐒跺悗灝唌k-length涓殑絎竴鏉ength鐨刲ambda鎼繃鏉ワ紝騫朵笖浣滀負涓や釜f鐨勫叆鍙?br /><span style="color: #ff9900;">(define Y</span><br /><span style="color: #ff9900;">  (lambda (length)</span><br /><span style="color: #ff9900;">    ((lambda (f)</span><br /><span style="color: #ff9900;">       (f f))</span><br /><span style="color: #ff9900;">     (lambda (length-mk)</span><br /><span style="color: #ff9900;">       (length (lambda (x)</span><br /><span style="color: #ff9900;">         ((length-mk length-mk) x)))))))</span><br />鏈鍚庯紝灝哬鏁村緱鏇村姞濂界湅涓鐐癸紝涔熺湅鏉ユ洿鍔犵殑閫氱敤錛屼笉浠呬粎鏄拡瀵筶ength錛岃屾槸鍏ㄩ儴鐨勯渶瑕侀掑綊鐨勫嚱鏁般?br /><span style="color: #ff9900;">(define (Y f)</span><br /><span style="color: #ff9900;">  ((lambda (g) (g g))</span><br /><span style="color: #ff9900;">   (lambda (g)</span><br /><span style="color: #ff9900;">     (f</span><br /><span style="color: #ff9900;">      (lambda (x) ((g g) x))))))</span><br />鍐嶉佷笂涓閬撴眰鍜?br /><span style="color: #ff9900;">((Y</span><br /><span style="color: #ff9900;">  (lambda (sum)</span><br /><span style="color: #ff9900;">    (lambda (n)</span><br /><span style="color: #ff9900;">      (cond ((= n 1) 1)</span><br /><span style="color: #ff9900;">        (else (+ n (sum (- n 1))))))))</span><br /><span style="color: #ff9900;"> 10)</span><br />鏂囩珷宸茬粡寰堥暱浜嗭紝鎵撲綇銆備互鍚庡啀鍙戞尌鍚с?/div></div></div></div></div></div></div></div><img src ="http://www.shnenglu.com/huaxiazhihuo/aggbug/201689.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/huaxiazhihuo/" target="_blank">鍗庡涔嬬伀</a> 2013-07-11 14:48 <a href="http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/11/201689.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>C璇█澶嶆潅澹版槑鐨勬湰璐ㄤ笌灞闄?/title><link>http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/01/201425.html</link><dc:creator>鍗庡涔嬬伀</dc:creator><author>鍗庡涔嬬伀</author><pubDate>Mon, 01 Jul 2013 07:57:00 GMT</pubDate><guid>http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/01/201425.html</guid><wfw:comment>http://www.shnenglu.com/huaxiazhihuo/comments/201425.html</wfw:comment><comments>http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/01/201425.html#Feedback</comments><slash:comments>6</slash:comments><wfw:commentRss>http://www.shnenglu.com/huaxiazhihuo/comments/commentRss/201425.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/huaxiazhihuo/services/trackbacks/201425.html</trackback:ping><description><![CDATA[<div>    鍏堢畝鍗曞洖欏句竴涓婥璇█鐨勭嫭鏈夌殑鍙橀噺澹版槑鏂瑰紡銆傝嚜璇╀嬌鐢–璇█澶氬勾錛屽嵈涓鐩村浜嶤鐨勫鏉傜殑鍙橀噺澹版槑鏂瑰紡澶寸毊鍙戦夯錛岀洿鍒扮湅鍒癡CZH澶х鍓嶄笉涔呯殑澶т綔錛屾墠鎭嶇劧澶ф偀銆傛儹鎰э紝鍥犳涓嬮潰鐨勫唴瀹歸鏈夋嬀浜虹墮鎱т箣瀚岋紝浣嗕負浜嗗紩鍑哄悗闈竴緋誨垪鍏充簬璇█鐨勯殢絎旓紝涔熸病鍔炴硶浜嗭紝鏈枃鐨勮崳瑾夐兘褰掍簬vczh澶х銆傚氨浠庢渶綆鍗曠殑璇磋搗銆?br />    int a;    // 璇存槑琛ㄨ揪寮廰鐨勫兼槸int鍨嬶紝a鑷繁鏈韓涔熸槸int鍨嬶紝榪欎笉鏄簾璇濆悧錛?br />    int array[N];    // 浜庢槸錛岃〃杈懼紡array[n]鐨勫間負int鍨嬶紝array鏄痠nt鏁扮粍錛屾槸鍚﹀簾璇濈殑鍛抽亾灝戜簡涓鐐癸紵<br />    int *pA;    // 鏄劇劧錛?pA鐨勫間負int鍨嬶紝鑰宲A鐨勭被鍨嬫槸鎸囧悜int鐨勬寚閽堛?br />    int fun(int x, int y)    // 姣棤鐤戦棶錛岃〃杈懼紡fun(a,b)鐨勫間負int鍨嬶紝fun鍒欐槸鍑芥暟錛屽叾鍑芥暟絳懼悕鏄?#8230;…<br />    閫氳繃鍓嶉潰渚嬪瓙錛岃鏄庝竴涓亾鐞嗭紝鍙互浠庡彟澶栦竴涓搴︽潵鐞嗚ВC鍙橀噺鐨勭被鍨嬪0鏄庯紝鍏堢‘瀹氭暣涓〃杈懼紡鐨勭粨鏋滃肩殑綾誨瀷錛屽啀鑰冨療鍙橀噺鏈韓鐨勭被鍨嬨傚氨濂芥瘮浠ヤ笂鍑犱釜渚嬪瓙錛宎錛堝崟鐙竴涓彉閲忛兘鏄〃杈懼紡錛? array[n], *pA, fun(a,b)榪欎簺琛ㄨ揪寮忛兘鏄痠nt鍨嬶紝瀹氫箟鍙橀噺鐨勮鍙ョ殑綾誨瀷錛屽叾瀹炲氨鏄負浜嗚鏄庤繖涓鍙ョ殑鍙橀噺鐨勬暣涓〃杈懼紡鐨勭粨鏋滅殑鍊肩殑綾誨瀷銆?br />    濂戒簡錛岃娣卞懠鍚革紝寮濮嬮噸鍙e懗浜嗭紝涓嬮潰鐨勬敞閲婏紝鍏跺疄閮芥槸搴熻瘽銆?br />    int *fuck[N];    // *func[n]鐨勭被鍨嬩負int錛屽洜姝わ紝func[n]鐨勭粨鏋滅被鍨嬩負int*錛屽洜姝わ紝func鐨勭被鍨嬩負鏁扮粍錛屾暟緇勭殑鍏冪礌涓篿nt鐨勬寚閽?br />    int (*pfuck)(int x, int y)    // (*pfuck)(a, b)鐨勭粨鏋滅被鍨嬩負int錛岀湅鍒?*pfuck)錛屾嫭鍙峰唴鍑虹幇涓鍏冩搷浣滅*錛屾鐗╀負姹傚緱鎸囬拡鐨勬墍鎸囦箣鍐呭錛岀劧鍚庯紝姝ゅ唴瀹硅繕鑳借繘琛屽嚱鏁拌皟鐢紝鍥犳鍙煡錛宲fuck涓烘寚閽堬紝鎸囧悜涓鍑芥暟錛岃鍑芥暟鐨勭鍚嶆槸……銆傚綋鐒訛紝琛ㄨ揪寮弍fuck(a, b)涔熷彲浠ュ緱鍒扮浉鍚岀殑緇撴灉錛屼絾鏄紝涓轟簡寮鴻皟pfuck鐨勭被鍨嬶紝璇峰潥鎸佷嬌鐢?*pfuck)銆?br />    int* (*pfuck)(int x, int y)    // *(*pfuck)(a, b)鐨勫間負int錛宲fuck鐨勭被鍨嬭嚜鐒舵槸鍑芥暟鎸囬拡錛屽嚱鏁扮鍚嶆槸鏈変袱涓猧nt鍨嬬殑鍙傛暟錛屽叾榪斿洖鍊兼槸int*<br />    int (*func[5])(int *p);    // 姣嬪焊緗枒錛?*func[i])(int *p)鐨勭粨鏋滄槸int鍨嬨傚畠琛ㄧず鍏堣幏鍙栨暟緇勭殑涓涓厓绱狅紝瀵瑰厓绱犺В寮曠敤錛岃繘鑰屽嚱鏁拌皟鐢ㄣ傛樉鐒訛紝func涓洪暱搴?鐨勬暟緇勶紝鏁扮粍鍏冪礌鏄嚱鏁版寚閽堬紝鍑芥暟鏈変竴int*琛岀殑鍙橀噺錛岃繑鍥炲兼槸int鍨嬨?br />    int *(*func())();    // 蹇冮噷鍙戦夯鏄笉鏄紝瑕佹貳瀹氥備笉綆℃庝箞鏍鳳紝*(*func())()鐨勭粨鏋滃緇堥兘鏄痠nt鍊鹼紝鏄笉鏄紵浠庢渶澶栧洿涓婄湅錛?(...)()錛屾涔冧竴鍑芥暟璋冪敤錛岀劧鍚庡榪斿洖鍊艱В寮曠敤寰楀埌鐨勫間負int銆傛垜浠煡閬擄紝C璇█涓紝鍙湁涓ょ墿鍙繘琛屽嚱鏁拌皟鐢ㄧ殑鎿嶄綔錛屾垨鍑芥暟錛屾垨鍑芥暟鎸囬拡錛屼袱鑰呭繀灞呭叾涓銆傛湁浠ヤ笂渚嬪瓙鍒嗘瀽鍙煡錛?(*func)()姝や箖瀵瑰嚱鏁版寚閽堢殑鍑芥暟璋冪敤緇撴灉姹傛寚閽堝箋傜幇鍦紝鍙堟湁*(*func())();錛屾嫭鍙峰唴鐨?func()錛屽垎鏄庡氨琛ㄧずfunc鐨勫嚱鏁拌皟鐢紝姝ゅ嚱鏁扮殑榪斿洖鍊間負鎸囬拡銆傜粨鍚堟渶澶栧眰鐨勫嚱鏁拌皟鐢紝姝よ繑鍥炲兼寚閽堟寚鍚戜竴鍑芥暟錛屼篃灝辨槸璇達紝榪斿洖鍊兼槸鍑芥暟鎸囬拡銆傚洜姝よ〃杈懼紡*(*func())()錛屾秹鍙婂埌涓や釜鍑芥暟璋冪敤錛屽畠琛ㄧず鍐呭眰鐨勫嚱鏁拌皟鐢ㄨ繑鍥炲嚱鏁版寚閽堬紝鑰屾鍑芥暟鎸囬拡鍐嶈皟鐢ㄤ竴嬈★紝鍏剁粨鏋滀負int*錛屽啀鐢ㄤ笂鎸囬拡*榪愮畻絎︼紝鏁翠釜琛ㄨ揪寮忕殑鍊煎氨涓篿nt浜嗐傚洜姝わ紝func鏄竴鍑芥暟錛屾鍑芥暟榪斿洖鍑芥暟鎸囬拡錛屽嚱鏁版寚閽堟寚鍚戜竴涓棤鍙傝岃繑鍥炲間負int*鐨勫嚱鏁般傛洸鎶樼濂囷紝澶у姛鍛婃垚銆?br /><br />    濂戒簡錛岃鍙嶈繃鏉ユ兂浜嗭紝濡備綍浠庡彉閲忕殑綾誨瀷鏉ユ瀯閫犲叾瀹氫箟璇彞銆傚ソ姣旓紝“fuck鎸囧悜涓涓暟緇勶紝鍏朵釜鏁頒負5錛屾暟緇勫厓绱犱負鍑芥暟鎸囬拡錛屽嚱鏁扮鍚嶄負甯︿竴涓?int *p)鍙傛暟錛岃繑鍥炵粨鏋滄槸int”銆?br />    鍏堣冭檻濡備綍浣跨敤姝ゅ彉閲忋傛棦鐒秄uck鏄暟緇勬寚閽堬紝閭d箞錛?fuck灝辨槸榪斿洖鍏舵墍鎸囧悜鐨勬暟緇勶紝鐒跺悗瑕佸緱鍒版暟緇勭殑鍏冪礌錛岃嚜鐒剁悊鎵褰撶劧蹇呴』鐢ㄥ埌[]鎿嶄綔絎︿簡錛屽洜姝わ紝灝卞緱鍒幫紝(*fuck)[i]浜嗭紝娉ㄦ剰錛屽崈涓囧垏璁幫紝蹇呴』鍔犳嫭鍙鳳紝鍚﹀垯錛?fuck[i]鎰忓懗鐫fuck鑷繁鏈韓灝辨槸鏁扮粍浜嗐傝嚜宸辨湰韜槸鏁扮粍錛屽拰鎸囧悜鏁扮粍錛屼篃鍗籌紝鏁扮粍鍜屾暟緇勬寚閽堢殑宸埆錛屾槸鐩稿綋澶х殑錛屽叾宸埆涔嬪ぇ灝卞ソ鍍忔暣鍨嬬被鍨嬪拰鏁村艦鎸囬拡綾誨瀷銆傜劧鍚庯紝蹇呴』涓嶈兘蹇樿鐨勬槸錛屼竴鍏冩搷浣滅*灝辨槸鍙栧緱鎸囬拡鐨勬墍鎸囦箣鐗┿?br />    濂戒簡錛屾諱箣錛屽浜巉uck錛屾垜浠氳繃(*fuck)[i]寰楀埌鏁扮粍鍏冪礌銆傛棦鐒跺厓绱犲張鏄嚱鏁版寚閽堬紝榪涜屽氨寰楀埌錛?*(*fuck)[i])(pa)錛岃繖涓〃杈懼紡鐨勫間負int銆傚洜姝わ紝絳旀灝辨槸錛?#8220;int (*(*fuck)[5])(int *p);”銆?br />    浠g爜鍐欐垚榪欐牱瀛愶紝鐪熶粬濡堢殑璐憋紝灝界帺鏂囧瓧娓告垙錛屽啓鐨勪漢璐瑰績錛岃鐨勪漢緋婃秱銆傝繖璇ユ鐨凜璇█錛宻hit錛?br />    鏂囩珷紿佺劧闀夸簡錛屾墦浣忋備笉鎯滃瀹屾暣鐨勭被鍨嬭繘琛屽垎紱伙紝浠ユ眰寰楀0鏄庝笌浣跨敤鐨勮娉曠殑楂樺害涓鑷存с侰璇█鐪熸槸錛岀湡鏄簿鑷村緱璁╀漢澶у掕儍鍙c?br /><br />    鍙堬細鏈夋椂鍊欙紝瀵逛簬紼嶅井澶嶆潅涓鐐瑰0鏄庣殑甯哥敤綾誨瀷錛屼細緇忓父鍑虹幇閲嶅鐨勫0鏄庤娉曪紝鐗瑰埆鏄湪鍑芥暟鎸囬拡鐨勬椂鍊欙紝涓轟簡鎷熻ˉ榪欑緙洪櫡錛屾垨鑰呰鏄棝鑻︼紝鎴栬呰鏄浜庡彉閲忕被鍨嬬殑閲嶈錛孋璇█鎻愪緵浜唗ypedef鐨勫叧閿瓧銆傜敤浠ヤ唬琛ㄨ繖縐嶅0鏄庝笌浣跨敤鐨勪竴鑷存х殑鍙橀噺鐨勭被鍨嬨傚湪鍓嶉潰鐨勪緥瀛愪腑鐪嬪埌錛屽0鏄庤鍙ヤ腑鐨勭被鍨嬶紝鍙槸璇存槑鍙橀噺閲囩敤榪欑琛ㄨ揪寮忔椂錛屽畠鐨勫氨鏄繖縐嶇被鍨嬨傚ソ姣旓紝int *pArray[20]錛?pArray[i]鐨勫間負int鍨嬶紝浣唒Array鍗寸粷涓嶆槸int鍨嬶紝涓轟簡鍙栧緱pArray鐨勭被鍨嬶紝鍙熷姪typedef錛涘叿浣撶殑浣跨敤濡備笅錛宼ypedef int* IntArray[20];錛岀劧鍚庯紝IntArray pArray;浠ュ畾涔夊悓鏍風被鍨嬬殑鍙橀噺銆傚張濂芥瘮涓婁緥錛宨nt *(*func())();榪欎釜鍑芥暟澹版槑濂藉儚璁╂煇浜涗漢闅句互鐞嗚В錛岀敤涓妕ypedef鍖栫畝涓涓嬶紝灝卞彲浠ラ噸鐐瑰緢紿佸嚭浜嗭細<br />    typedef int* (*FunFuck)();    // FunFuck浠h〃鏃犲弬榪斿洖鍊兼槸int*鐨勫嚱鏁版寚閽堢被鍨嬶紱<br />    FunFuck func();    // 浣滅敤鐩稿綋浜巌nt *(*func())()錛屼絾鍚箟鏇村姞椴滄槑銆?br />    鍙互鐪嬪埌錛宼ypedef鐨勭敤娉曞緢綆鍗曪紝涓嶈繃鏄湪榪囧幓鐨勮〃杈懼紡鐨勫墠闈㈠姞涓涓猼ypedef鑰屽凡銆傚悗璇濓紝typedef鍦–++鐨則emplate涓紝鎵紨浜嗛潪甯擱潪甯擱噸瑕佺殑瑙掕壊錛岀壒鍒槸妯℃澘鍏冪紪紼婱PL涓紝鍏ㄩ儴鐨勭被鍨嬫紨綆楀叏閮ㄥ帇鍦ㄥ畠韜笂錛屽叾浣滅敤涔嬪ぇ錛岀畝鐩存槸鎯婂ぉ鍦版常楝肩錛屾病鏈変簡typedef錛孋++鐨則emplate涓嶈繃鏄櫘閫氱畝鍗曠殑娉涘瀷緙栫▼錛屾湁浜唗emplate瀵箃ypedef鐨勫畬鍠勬敮鎸侊紝鍏跺疄灝辨槸鍦╯truct/class鍐呴儴涓敮鎸乼ypedef璇彞錛屽氨瀵艱嚧浜唗mp鐨勬í絀哄嚭鐜幫紝瀵艱嚧C++鐨則emplate鎴愪負濞佸姏鏈鎭愭儳錛屽悓鏃惰娉曚篃鏄渶鎭愭儳鐨勬硾鍨嬭璦錛屾病鏈変箣涓銆?br /><br />    緇х畫琛ュ厖錛氬姞涓奵onst銆備互涓婂浜庡鏉傚0鏄庣殑鐞嗚В錛屾槑鐪間漢涓鐪嬪氨鐭ラ亾浠呬粎鏄粠鍙沖肩殑瑙掑害鍏ユ墜銆傝鐞嗚Вconst錛屽氨蹇呴』涓嶅彲涓嶆彁鍒板乏鍊間簡銆傚乏鍊煎彸鍊兼槸C++涓殑鍩烘湰姒傚康錛屼笁璦涓よ涔熻涓嶆竻妤氥傛渶綺楁祬鐨勭湅娉曪紝宸﹀兼寚鍙互琚啓鍏ワ紝涔熷氨鏄鑳藉嚭鐜頒簬璧嬪艱鍙ョ殑宸﹁竟錛涘彸鍊兼寚鍙錛屽彧鑳藉湪璧嬪艱〃杈懼紡鐨勫彸杈廣傚綋鐒訛紝涓鑸潵璇達紝宸﹀煎線寰鍙互褰撳仛鍙沖兼潵浣跨敤錛屽彲鍐欏線寰鎰忓懗鐫鍙銆傝宑onst鐨勪綔鐢紝灝辨槸灝嗗師鏈彲鍐欑殑涓滆タ錛岀粰鏁存垚鍙鐨勪簡銆傚叿浣撳埌琛ㄨ揪寮忔潵璇達紝灝辨槸鏌愪簺琛ㄨ揪寮忕殑鍊煎叿澶囧乏鍙沖鹼紝鑰宑onst灝辨槸鍘繪帀浜嗗畠鐨勫乏鍊煎姛鑳姐備婦渚嬭鍚э紝榪樻槸浠庢渶綆鍗曡璧楓?br />    int a; 琛ㄨ揪寮廰鐨勭粨鏋滄槸int鍨嬶紝鏃㈡槸宸﹀煎張鏄彸鍊鹼紱 <br />    const int a;錛宎榪斿洖鐨勭粨鏋滄槸int綾誨瀷錛屼絾鏄緇撴灉宸蹭笉鍐嶅彲鍐欎簡錛屼篃鍗蟲槸a涓嶈兘鏀懼湪璧嬪艱鍙ョ殑宸﹁竟浜嗐?br />    int const a; 鍙繖鏍風悊瑙o紝鍏堜笉鐞唅nt const錛宎鏄竴涓彉閲忥紝鏃㈠彲璇誨張鍙啓錛宑onst灝哸鏁存垚鍙銆俰nt琛ㄧずconst a鐨勭粨鏋滅被鍨嬨傝櫧鐒訛紝鐞嗚В涓婅繖鏍鳳紝浣嗗緙栬瘧鍣ㄦ潵璇達紝const int a;鍜宨nt const a;閮戒竴鏍鳳紝閮藉彧鏄〃杈句簡鍚屾牱鐨勬剰鎬濓紝a鏄竴涓暣鍨嬪父閲忋?br />    const int *p;錛?p緇撴灉涓篿nt鍨嬶紝鍔犱笂const鍚庯紝*p鍙兘璇諱簡錛屾墍浠ワ紝p鏄暣褰㈡寚閽堬紝鍏舵墍鎸囩殑鍐呭鍙兘璇諱笉鑳藉啓錛屼絾p鏈韓鍗村彲鍐欍?int const *p;錛屽垯鍏堝己璋?p鐨勫彧璇繪э紝鐒跺悗鍐嶈鏄?p涓篿nt鍨嬨傚叾瀹烇紝榪欎袱縐嶅啓娉曠殑鎰忔濋兘涓鏍楓?br />    int *const p;錛宑onst 绱ф尐鐫p錛岃鏄巔鏈韓鍙銆傝嚦浜?int *錛屽垯琛ㄧず*p綾誨瀷涓篿nt錛屽彲璇誨啓銆傚洜姝わ紝p鏄暣褰㈡寚閽堬紝p鏈韓涓嶅彲鍐欙紝浣嗗叾鎵鎸囩殑鍐呭鍗村彲璇誨張鍙啓銆傝瀹炲湪錛屼笉鏄庣櫧榪欐牱鐨勬寚閽堝彉閲忔湁浠涔堥鐢紝瀹為檯鐨勪唬鐮佸簲璇ョ敤鐨勫緢灝戞墠鏄?br />    涓轟簡琛ㄨ揪鎸囬拡鐨勫彧璇葷函媧佹х殑姒傚康錛屼笉浠呮寚閽堟湰韜笉鑳藉啓錛岃繛鍏舵寚鍚戠殑鍐呭涔熶笉鍙慨鏀癸紝C++緇堜簬鏁村嚭浜嗕笅闈㈣繖鏍蜂紵澶х殑浠g爜銆俰nt const *const p;鎴栬卌onst int * const p;銆侰++鐨勮繖縐嶅仛娉曪紝淇楃О鑷村姏浜庤В鍐寵噯鎯充腑鐨勯棶棰橈紝鍥犱負const涓庢寚閽堢殑緇勫悎錛屽疄闄呬笂鍙湁鎸囬拡鎵鎸囧悜鐨勫唴瀹瑰彧鑳借寰堟湁鎰忎箟錛屽叾浠栫殑錛屾剰涔夊井涔庡叾寰?br />    鍙錛屽師鏈珻鐨勫0鏄庝嬌鐢ㄤ竴鑷存х殑璇硶錛岄亣涓奵onst涔嬪悗錛屽紑濮嬫湁鐐規販涔變簡銆傚綋鍗婅礬涓潃鍑篊++鐨勫紩鐢ㄤ箣鍚庯紝榪欑璇硶鐨勪竴鑷存у湪C++涓氨涓嶅瀛樺湪浜嗐侰++鐨勫緢澶氳璦鐗規э紝閮藉湪涓嶅悓紼嬪害涓嶅悓瑙掑害錛屾繁搴﹀拰騫垮害涓婏紝褰㈠紡鍜岃涔変笂錛岀粰C璇硶鐨勭簿鑷存ч犳垚鑷村懡鐨勫悇縐嶅悇鏍風殑鍐插嚮銆備互鑷充簬錛屾渶鍚嶤++鍙樻垚浜嗘湁鍙蹭互鏉ュ緢闅懼緢澶嶆潅瓚呯駭鍙樻佹亹鎬栫殑璇█浜嗭紝娌℃湁涔嬩竴銆?/div><img src ="http://www.shnenglu.com/huaxiazhihuo/aggbug/201425.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/huaxiazhihuo/" target="_blank">鍗庡涔嬬伀</a> 2013-07-01 15:57 <a href="http://www.shnenglu.com/huaxiazhihuo/archive/2013/07/01/201425.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss> <a href="http://www.shnenglu.com/">青青草原综合久久大伊人导航_色综合久久天天综合_日日噜噜夜夜狠狠久久丁香五月_热久久这里只有精品</a> <div style="position:fixed;left:-9000px;top:-9000px;"><font id="pjuwb"></font><button id="pjuwb"><pre id="pjuwb"></pre></button><sub id="pjuwb"></sub><tbody id="pjuwb"><var id="pjuwb"><address id="pjuwb"></address></var></tbody><listing id="pjuwb"><label id="pjuwb"><strong id="pjuwb"></strong></label></listing><wbr id="pjuwb"><small id="pjuwb"><tbody id="pjuwb"></tbody></small></wbr><ins id="pjuwb"><xmp id="pjuwb"></xmp></ins><style id="pjuwb"></style><label id="pjuwb"><em id="pjuwb"><li id="pjuwb"></li></em></label><samp id="pjuwb"></samp><menu id="pjuwb"><input id="pjuwb"></input></menu><pre id="pjuwb"><tbody id="pjuwb"><tfoot id="pjuwb"><button id="pjuwb"></button></tfoot></tbody></pre><form id="pjuwb"></form><i id="pjuwb"><style id="pjuwb"><label id="pjuwb"><sup id="pjuwb"></sup></label></style></i><li 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