{"id":124868,"date":"2020-06-27T01:18:58","date_gmt":"2020-06-26T17:18:58","guid":{"rendered":"http:\/\/4563.org\/?p=124868"},"modified":"2020-06-27T01:18:58","modified_gmt":"2020-06-26T17:18:58","slug":"rust-%e7%9a%84%e6%99%ba%e8%83%bd%e6%8c%87%e9%92%88%e5%a4%aa%e5%8f%8d%e4%ba%ba%e7%b1%bb%e7%9a%84%ef%bc%81","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=124868","title":{"rendered":"Rust \u7684\u667a\u80fd\u6307\u9488\u592a\u53cd\u4eba\u7c7b\u7684\uff01"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  Rust \u7684\u667a\u80fd\u6307\u9488\u592a\u53cd\u4eba\u7c7b\u7684\uff01               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : xiaopanzi <\/span>  <span><i><\/i> 9<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u5410\u4e2a\u69fd\uff1a\u8fd9\u662f\u7b2c 3 \u6b21\u5b66\u4e60 Rust \u3002\u4e4b\u524d\u90fd\u662f\u5230\u4e86\u667a\u80fd\u6307\u9488\u90a3\u91cc\u505c\u4f4f\u4e86\uff0c\u8fd9\u6b21\u53c8\u662f\u9047\u5230\u667a\u80fd\u6307\u9488\u6709\u70b9\u6655\u4e4e\u4e4e\u7684\u3002\u662f\u5b83\u8bbe\u8ba1\u5f97\u592a\u53cd\u4eba\u7c7b\uff0c\u8fd8\u662f\u6211\u592a\u8822\u4e86\uff1f<\/p>\n<p>\u653e\u4e00\u6bb5\u8ba9\u6211\u4eca\u665a\u7f3a\u6c27\u7684\u4ee3\u7801\uff1a<\/p>\n<pre><code>pub fn peek_front(&amp;self) -&gt; Option&lt;Ref&lt;T&gt;&gt; {     self.head.as_ref().map(|node| {         Ref::map(node.borrow(), |node| &amp;node.elem)     }) } <\/code><\/pre>\n<p>\u6765\u81eaToo Many Lists\u3002<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>6<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"2059088\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : lance6716 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             rust \u5199\u94fe\u8868\u8fd8\u662f\u5230\u5904 Copy \u7b97\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2059089\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : billlee <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             n \u5c42\u5d4c\u5957\u7684\u51fd\u6570\u5f0f\u4ee3\u7801\uff0c\u5927\u6982\u4f60\u9700\u8981\u4e00\u4e2a\u6709\u7c7b\u578b\u63d0\u793a\u7684 IDE?                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2059090\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : xiaopanzi <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @billlee \u5012\u4e0d\u662f\u7c7b\u578b\u63d0\u793a\u7684\u95ee\u9898\u3002vscode \u91cc\u9762\u6dfb\u52a0\u63d2\u4ef6\u540e\u5c31\u80fd\u663e\u793a\u7c7b\u4f3c\u3002\u4e3b\u8981\u8ba9\u6211\u96be\u53d7\u7684\u5730\u65b9\u662f\uff0c\u6211\u5c31\u60f3 peek \u4e00\u4e0b\uff0c\u7adf\u7136\u4e0d\u80fd\u8fd4\u56de&amp;\uff0c\u975e\u5f97\u501f\u52a9 Ref\uff0c\u628a\u4eba\u641e\u6655\u4e86\u3002\u5982\u679c\u4ece\u5176\u4ed6\u8bed\u8a00\u8f6c\u8fc7\u6765\uff0c\u5b8c\u6574\u5b9e\u73b0 doube linked list \u7684\u8bdd\uff0c\u96be\u5ea6\u4e0d\u5c0f\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2059091\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : lance6716 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @xiaopanzi \u8fd9\u4e2a\u535a\u5ba2\u633a\u6709\u98ce\u8da3\u7684\uff0c\u800c\u4e14\u8bb2\u7684\u5f88\u8be6\u7ec6\uff0c\u611f\u8c22\u5206\u4eab                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2059092\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : fakeshadow <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             RefCell \u7684\u5b89\u5168\u5c31\u662f\u9760\u8fd9\u4e2a\u6765\u4fdd\u8bc1\u7684\u3002Ref \u91cc\u5305\u4e86\u4e2a\u5f15\u7528\u8ba1\u6570\uff0c\u5f53 Ref \u9500\u6bc1\u7684\u65f6\u5019\u4f1a\u901a\u77e5 RefCell \u5f15\u7528-1 \u3002\u6240\u4ee5\u4f60\u7684\u5f15\u7528\u4e0d\u80fd\u6bd4 Ref \u547d\u8fd8\u957f\u3002<br \/>\u6211\u5012\u662f\u89c9\u5f97\u8fd9\u7c7b Rust \u6559\u7a0b\u7684\u95ee\u9898\u5728\u4e8e\u523b\u610f\u56de\u907f unsafe \u7684\u5e94\u7528\uff0c\u94fe\u8868\u8fd9\u7c7b\u95ee\u9898\u7528 unsafe \u548c\u88f8\u6307\u9488\u4f1a\u5bb9\u6613\u8bb8\u591a\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"2059093\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : sssooonnnggg <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u8fd9\u79cd\u60c5\u51b5\u4e00\u822c\u5c31\u7528 unsafe \u76f4\u63a5\u64cd\u4f5c\u6307\u9488\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>Rust \u7684\u667a\u80fd\u6307\u9488\u592a\u53cd\u4eba\u7c7b\u7684\uff01 &hellip;<\/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\/124868"}],"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=124868"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/124868\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=124868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=124868"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=124868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}