{"id":160403,"date":"2020-09-25T02:15:23","date_gmt":"2020-09-24T18:15:23","guid":{"rendered":"http:\/\/4563.org\/?p=160403"},"modified":"2020-09-25T02:15:23","modified_gmt":"2020-09-24T18:15:23","slug":"%e6%83%b3%e9%97%ae%e4%b8%80%e4%b8%aa%e5%90%84%e4%bd%8d%e5%a4%a7%e7%89%9b%e6%8a%80%e6%9c%af%e9%97%ae%e9%a2%98%ef%bc%8c%e8%bf%99%e4%b8%aa%e6%93%8d%e4%bd%9c%e7%94%a8-java8-%e5%88%86%e7%bb%84%e6%80%8e","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=160403","title":{"rendered":"\u60f3\u95ee\u4e00\u4e2a\u5404\u4f4d\u5927\u725b\u6280\u672f\u95ee\u9898\uff0c\u8fd9\u4e2a\u64cd\u4f5c\u7528 java8 \u5206\u7ec4\u600e\u4e48\u505a\uff1f"},"content":{"rendered":"
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\u60f3\u95ee\u4e00\u4e2a\u5404\u4f4d\u5927\u725b\u6280\u672f\u95ee\u9898\uff0c\u8fd9\u4e2a\u64cd\u4f5c\u7528 java8 \u5206\u7ec4\u600e\u4e48\u505a\uff1f <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : thatiam92 <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u6709\u4e00\u4e2a\u5bf9\u8c61\u96c6\u5408 Stream stream = Stream.of(new People(“\u5f20\u4e09”,”\u8001\u5e08”),new People(“\u674e\u56db”,”\u5b66\u751f”),new People(“\u738b\u4e94”,”\u6821\u957f”));<\/p>\n

\u60f3\u901a\u8fc7\u5206\u7ec4\u5f97\u7c7b\u4f3c\u4e8e\u8fd9\u6837\u7684\u5206\u7ec4 Map<Boolean,List<People>> ;<\/p>\n

\u5f53\u4e3a true \u65f6\uff0cList \u96c6\u5408\u4e3a \uff5b”\u5f20\u4e09”,”\u674e\u56db”,”\u738b\u4e94”)<\/p>\n

\u5f53\u4e3a false \u65f6\u5019\uff0clist \u96c6\u5408\u4e3a\uff5b”\u5f20\u4e09\u8001\u5e08”\uff0c”\u674e\u56db\u5b66\u751f”,”\u738b\u4e94\u6821\u957f”\uff5d\uff1b<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (3<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : lululau <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u95ee\u9898\u63cf\u8ff0\u5f97\u4e00\u5806\u9519\u8bef\uff0c\u5c1d\u8bd5\u7406\u89e3\u4e0b\u4f60\u7684\u610f\u56fe\uff1a<\/p>\n

    var people = List.of(new Person(“\u5f20\u4e09”,”\u8001\u5e08”),new Person(“\u674e\u56db”,”\u5b66\u751f”),new Person(“\u738b\u4e94”,”\u6821\u957f”));
    var result = Map.of(true, people.stream().map(Person::getName).collect(Collectors.toList()),
    false, people.stream().map(Person::getNameWithRole).collect(Collectors.toList())); <\/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
    \u53e6\u5916\u4e00\u4e2a\u601d\u8def\uff1a<\/p>\n

    var result = people.stream().flatMap(p -> Steam.of(Pair.of(true, p.getName()), Pair.of(false, p.getNameWithRole()))).collect(Collectors.groupingBy(Pair::getLeft, Collectors.mapping(Pair.getRight), Collectors.toList())) <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : lululau <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u66f4\u6b63\uff1a<\/p>\n

    var result = people.stream().flatMap(p -> Steam.of(Pair.of(true, p.getName()), Pair.of(false, p.getNameWithRole()))).collect(Collectors.groupingBy(Pair::getLeft, Collectors.mapping(Pair::getRight, Collectors.toList())) <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    \u60f3\u95ee\u4e00\u4e2a\u5404\u4f4d\u5927\u725b\u6280\u672f\u95ee\u9898\uff0c\u8fd9\u4e2a\u64cd\u4f5c…<\/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\/160403"}],"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=160403"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/160403\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=160403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=160403"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=160403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}