{"id":286341,"date":"2021-01-16T20:10:56","date_gmt":"2021-01-16T12:10:56","guid":{"rendered":"http:\/\/4563.org\/?p=286341"},"modified":"2021-01-16T20:10:56","modified_gmt":"2021-01-16T12:10:56","slug":"lambda-%e8%a1%a8%e8%be%be%e5%8c%bf%e5%90%8d%e5%86%85%e9%83%a8%e7%b1%bb-%e4%bc%9a%e5%9c%a8%e5%8f%a6%e4%b8%80%e4%b8%aa%e7%ba%bf%e7%a8%8b%e4%b8%ad%e6%89%a7%e8%a1%8c","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=286341","title":{"rendered":"“lambda \u8868\u8fbe(\u533f\u540d\u5185\u90e8\u7c7b) \u4f1a\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c”"},"content":{"rendered":"
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“lambda \u8868\u8fbe(\u533f\u540d\u5185\u90e8\u7c7b) \u4f1a\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c” <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : noble4cc <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u600e\u4e48\u7406\u89e3\u8fd9\u53e5\u8bdd\uff1f\u770b\u5230\u7f51\u4e0a\u8d44\u6599\u5f88\u591a\u90fd\u8fd9\u4e48\u8bf4\uff0c\u5f53\u7136\u53ef\u80fd\u662f\u4e92\u76f8\u6284\u7684<\/p>\n

lambda \u8868\u8fbe\u5f0f\u662f\u72ec\u7acb\u7ebf\u7a0b\u6267\u884c\uff1f\u8fd8\u662f\u8bf4\u6709\u7684\u573a\u666f\u4e0b lambda \u662f\u4e0d\u5728\u5b9a\u4e49\u7684\u7ebf\u7a0b\u8c03\u7528\u6267\u884c\uff1f<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (23<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : XDJI <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8bf4\u7684\u662f\u5e76\u884c\u6d41\uff1f lambda \u53ea\u662f\u4e00\u79cd\u5199\u6cd5 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zhzy0077 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    import java.lang.*;
    public class Main {
    public static void main(String[] args) {
    run(() -> System.out.println(“hello world”));
    }<\/p>\n

    static void run(Runnable r) {
    r.run();
    }
    }<\/p>\n

    \u8fd9\u80af\u5b9a\u662f\u5728\u540c\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c\u7684\uff0c\u8fd9\u53e5\u8bdd\u5e94\u8be5\u662f\u6709\u4e0a\u4e0b\u6587\u7684\u5427 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : chendy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    parallel \u7684 stream \uff1f
    ExecutorService.submit \uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : noble4cc <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @XDJI \u4e0d\u662f\u5e76\u884c\u6d41\uff0c
    @zhzy0077
    \u53ef\u4ee5 Google \u4e0b Variable used in lambda expression should be final or effectively final <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : misaka19000 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u770b\u4e00\u4e0b\u6c47\u7f16\u5c31\u77e5\u9053\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : chendy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @noble4cc \u6240\u4ee5\u6807\u9898\u8fd9\u53e5\u8bdd\u7684\u4e0a\u4e0b\u6587\u548c\u539f\u6587\u662f\u5565\u5462\uff1f
    \u81f3\u5c11\u4e0d\u5e94\u8be5\u662f\u201c\u4f1a\u201d\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c\uff0c\u5e94\u8be5\u662f\u201c\u53ef\u4ee5\u201d\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c\u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : wucao219101 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6beb\u65e0\u903b\u8f91\u7684\u4e00\u53e5\u8bdd\uff0cLambda \u8868\u8fbe\u5f0f\u8ddf\u7ebf\u7a0b\u6ca1\u6709\u4e00\u70b9\u5173\u7cfb\uff0clambda \u8868\u8fbe\u5f0f\u53ea\u662f\u4e00\u79cd\u8bed\u6cd5\u3002<\/p>\n

    \u5982\u679c\u662f\u7528 Lambda \u5b9e\u73b0\u542f\u52a8 Runnable \u7ebf\u7a0b\uff0c\u786e\u5b9e\u662f\u4f1a\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c\uff0c\u4f46\u662f\u603b\u4e0d\u80fd\u8bf4\u662f”lambda \u8868\u8fbe(\u533f\u540d\u5185\u90e8\u7c7b) \u4f1a\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c”\u5427\uff1f <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zoharSoul <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6ca1\u6709\u8fd9\u79cd\u8bf4\u6cd5 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : pursuer <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    lambda”\u53ef\u80fd”\u4f1a\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c\uff0c\u5c31\u50cf\u56de\u8c03\u51fd\u6570\u4e00\u6837 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : noble4cc <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wucao219101 \u5176\u5b9e\u6211\u4e5f\u8fd9\u4e48\u89c9\u5f97 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lululau <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u7684\u95ee\u9898\u5176\u5b9e\u548c\u7ebf\u7a0b\u6ca1\u5173\u7cfb\uff0c\u548c lambda \u4e5f\u6ca1\u5173\u7cfb\uff1a<\/p>\n

    \u201c\u4f60\u4e0d\u80fd\u5728\u533f\u540d\u5185\u90e8\u7c7b\u4e2d\u4fee\u6539\u5916\u90e8\u5c40\u90e8\u53d8\u91cf\uff0c\u56e0\u4e3a Java \u5bf9\u4e8e\u533f\u540d\u5185\u90e8\u7c7b\u4f20\u9012\u53d8\u91cf\u7684\u5b9e\u73b0\u662f\u57fa\u4e8e\u6784\u9020\u5668\u4f20\u53c2\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u5982\u679c\u5141\u8bb8\u4f60\u5728\u533f\u540d\u5185\u90e8\u7c7b\u4e2d\u4fee\u6539\u503c\uff0c\u4f60\u4fee\u6539\u7684\u662f\u533f\u540d\u5185\u90e8\u7c7b\u4e2d\u7684\u5916\u90e8\u5c40\u90e8\u53d8\u91cf\u526f\u672c\uff0c\u6700\u7ec8\u5e76\u4e0d\u4f1a\u5bf9\u5916\u90e8\u7c7b\u4ea7\u751f\u6548\u679c\uff0c\u56e0\u4e3a\u5df2\u7ecf\u662f\u4e8c\u4e2a\u53d8\u91cf\u4e86\u3002
    \u8fd9\u6837\u5c31\u4f1a\u8ba9\u7a0b\u5e8f\u5458\u4ea7\u751f\u56f0\u6270\uff0c\u539f\u4ee5\u4e3a\u4fee\u6539\u4f1a\u751f\u6548\uff0c\u4e8b\u5b9e\u4e0a\u5374\u5e76\u4e0d\u4f1a\uff0c\u6240\u4ee5 Java \u5c31\u7981\u6b62\u5728\u533f\u540d\u5185\u90e8\u7c7b\u4e2d\u4fee\u6539\u5916\u90e8\u5c40\u90e8\u53d8\u91cf\u3002\u201d <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : HolmLoh <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    lambda \u4f1a\u5728\u522b\u7684\u7ebf\u7a0b\u4e2d\u8fd0\u884c
    \u4f46\u4e0d\u662f\u4e00\u5b9a\u4f1a\u518d\u618b\u7684\u7ebf\u7a0b\u4e2d\u8fd0\u884c
    \u4e3e\u4e2a\u4f8b\u5b50
    “`
    Runnable runnable = () -> {};
    runnable.run();
    “`
    “`
    Runnable runnable = () -> {};
    new Thread(runnable).start();
    “` <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : jptx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \""lambda<\/p>\n

    \u6211\u627e\u5230\u4f60\u8bf4\u7684\u90a3\u7bc7\u6587\u7ae0\u4e86\uff0c\u4e0b\u9762\u8bc4\u8bba\u533a\u65e9\u5c31\u5410\u69fd\u8fc7\u4e86 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : freebird1994 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53ef\u80fd\u4f1a\u5728\u53e6\u5916\u7684\u7ebf\u7a0b\u6267\u884c\u5427\uff0cparallel \u3002\u7528 lambda \u6700\u70e6\u7684\u5c31\u662f\u8fd9\u70b9 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : young1lin <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @chendy \u6211\u89c9\u5f97\u4e5f\u53ef\u80fd\u8bf4\u7684\u662f\u8fd9\u4e2a\uff0c\u770b\u770b\u300a Java 8 \u5b9e\u6218\u300b\u5c31\u77e5\u9053\u4e86\u3002\u4e0d\u8fc7\u8fd9\u662f Stream \u76f8\u5173\u7684\uff0c\u4e0d\u662f Lambda <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : trevis761923 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5e76\u884c\u6d41\u4f1a\u53e6\u5916\u5f00\u7ebf\u7a0b. <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : noble4cc <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @lululau \u8fd9\u4e2a\u786e\u5b9e\u77e5\u9053\uff0c\u4f46\u662f\u7f51\u4e0a\u7684\u6587\u7ae0\u90fd\u662f\u8bf4\u4f1a\u5728\u591a\u4e2a\u7ebf\u7a0b\u6267\u884c\uff0c\u800c\u4e14\u4e00\u641c\u4e00\u5927\u7247\u90fd\u662f\u8fd9\u4e48\u8bf4\u7684\u3002\u3002\u3002\u6240\u4ee5\u611f\u89c9\u6709\u4e9b\u5947\u602a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : vinceall <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u81ea\u5df1\u505a\u5b9e\u9a8c\u5c31\u77e5\u9053\u4e86\uff0c\u5e94\u8be5\u4e0d\u4f1a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : vinceall <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @noble4cc \u7f51\u4e0a\u7684\u4e1c\u897f\u3002\u3002\u3002\u8fde\u9519\u522b\u5b57\u90fd\u4e00\u6837\uff0c\u6ca1\u8425\u517b <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : noble4cc <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @vinceall \u786e\u5b9e\u505a\u8fc7\u5b9e\u9a8c\u4e86\uff0c\u548c\u7ebf\u7a0b\u6ca1\u4ec0\u4e48\u5173\u7cfb\u3002\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : fpure <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8fd9\u8bf4\u6cd5\u660e\u663e\u662f\u65ad\u7ae0\u53d6\u4e49\u7136\u540e\u8d8a\u4f20\u8d8a\u504f\u7684\u5178\u578b <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : namelosw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53ea\u662f\u67d0\u4e9b lambda \u4f1a\u65b0\u5efa\u7ebf\u7a0b, \u7edd\u5927\u90e8\u5206\u662f\u4e0d\u4f1a\u7684. \u4e0d\u5728\u65b0\u7ebf\u7a0b\u8fd0\u884c\u7684 lambda \u6539\u53d8\u91cf\u8ddf JS \u95ed\u5305\u4e00\u6837, \u5c31\u662f\u7a00\u677e\u5e73\u5e38\u7684\u4e1c\u897f, \u6ca1\u6709\u4ec0\u4e48\u95ee\u9898.<\/p>\n

    \u4e0d\u8fc7\u8fd9\u4e2a\u4e5f\u4f53\u73b0\u4e86\u4e00\u4e2a\u8bed\u8a00\u8bbe\u8ba1\u95ee\u9898, \u95ed\u5305\u6355\u83b7\u53d8\u91cf\u6709\u65f6\u5019\u662f\u5371\u9669\u7684. \u6bd4\u5982 Akka \u8fd9\u4e2a\u5e93\u56e0\u4e3a\u5728 JVM \u4e0a, \u6240\u4ee5\u53ea\u80fd\u9760\u81ea\u89c9\u4e0d\u8981\u6355\u83b7 mutable \u7684\u4e1c\u897f, \u4e0d\u7136\u5c31\u4f1a\u628a\u7ebf\u7a0b\u6c60\u5361\u6b7b.<\/p>\n

    \u6bd4\u8f83\u597d\u7684\u8bbe\u8ba1\u662f Erlang \u90a3\u79cd, spawn \u8fdb\u7a0b\u7684\u65f6\u5019 lambda \u6355\u83b7\u7684\u4e1c\u897f\u5168\u662f immutable \u7684, \u8fd9\u6837\u6570\u636e\u53ef\u4ee5\u4efb\u610f\u590d\u5236, \u653e\u5728\u54ea\u4e2a\u8fdb\u7a0b\u90fd\u662f\u4e00\u6837\u7684, \u8fd9\u6837\u5c31\u53ef\u4ee5\u4efb\u610f\u6355\u83b7\u800c\u4e0d\u4f1a\u6709\u4efb\u4f55\u526f\u4f5c\u7528. <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : faceRollingKB <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    lambda \u4e0d\u5c31\u662f\u4e00\u79cd\u5b9a\u4e49\u533f\u540d\u65b9\u6cd5\u7684\u8bed\u6cd5\u4e48\uff0c\u600e\u4e48\u5c31\u8ddf\u7ebf\u7a0b\u626f\u4e0a\u5173\u7cfb\u4e86\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    “lambda \u8868\u8fbe(…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/286341"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=286341"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/286341\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=286341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=286341"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=286341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}