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      "content_html": "<ol>\n<li>\u6bd4\u5982\u6211\u8981\u7edf\u4e00\u5904\u7406\u767b\u9646\u5931\u8d25\u548c\u7f51\u7edc\u9519\u8bef\u3002 </li>\n</ol>\n<p>\u5982\u679c\u662f\u5728 java \u91cc\u9762\u76f4\u63a5\u5728\u65b9\u6cd5\u91cc\u9762\u629b\u51fa 2 \u4e2a\u5f02\u5e38\u5373\u53ef\u3002 \u4f46\u662f\u5728 kotlin \u91cc\u9762\u5fc5\u987b</p>\n<pre><code>\tval runResult = runCatching{\n       HttpResponse(it.isSuccessful,it.code,it.message)\n    }\n    if(runResult.isFailure){\n       when(moveFileAgain.exceptionOrNull()){\n        // \u5355\u72ec\u5904\u7406\u5f02\u5e38\n          \n       }\n    \n    }\n    // \u8fd8\u6709\u5199\u4e00\u4e9b(\u8fd9\u91cc\u8bf7\u6c42\u6210\u529f\u4e86)\n    if(result.code == 404){\n       return runResult.getOrDefault()\n    }\n      if(result.code == 401){\n        // \u8ba4\u8bc1\u5931\u8d25\u4e86\n       return runResult.getOrDefault()\n    }\n   \n\n</code></pre>\n<p>\u5982\u679c\u662f\u5728 java \u91cc\u9762\u5c31\u518d\u7b80\u5355\u4e0d\u8fc7\u4e86\uff0c\u76f4\u63a5\u5b9a\u4e49\u4e24\u4e2a\u5f02\u5e38\uff0c\u5168\u5c40\u5904\u7406.  \u53d7\u68c0\u67e5\u5f02\u5e38\u662f\u771f\u7684\u723d\u3002 \u7279\u522b\u662f\u5728\u5d4c\u5957\u8bf7\u6c42\uff0c1 \u4e2a api \u8981\u8bf7\u6c42\u597d\u51e0\u6b21\u7684\u60c5\u51b5\u3002</p>\n<p>\u8fd9\u4e48\u8bf4\u5427\u3002 \u8fd9\u91cc\u9762\u7684\u5f88\u591a\u5e38\u89c1\u4f7f\u7528 java \u6765\u5199\u4ee3\u7801\u53ef\u80fd\u8981\u7b80\u5355\u7684\u591a\u3002 \u54ea\u6709\u8fd9\u4e48\u591a\u7684\u7834\u4e8b\u3002</p>\n<p>\u5927\u4f6c\u4eec\u6709\u4ec0\u4e48\u529e\u6cd5\u5904\u7406\u8fd9\u79cd\u4e8b\u60c5\uff0c \u6211\u7684\u8981\u6c42\u5c31\u662f\u767b\u9646 401 \u6216\u8005\u6709\u5f02\u5e38\u76f4\u63a5\u8fd4\u56de\u5c31\u662f\u4e86\u3002kotlin \u5b9e\u5728\u662f\u592a\u7e41\u7410\u4e86\u3002</p>\n", 
      "date_published": "2024-10-11T17:28:19+00:00", 
      "title": "kotlin \u6ca1\u6709\u53d7\u68c0\u5f02\u5e38\u771f\u592a\u96be\u9876\u4e86\u3002\u5410\u69fd", 
      "id": "https://www.v2ex.com/t/1079399"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/300", 
        "name": "300", 
        "avatar": "https://cdn.v2ex.com/avatar/55fe/29e6/116124_large.png?m=1720510511"
      }, 
      "url": "https://www.v2ex.com/t/1077764", 
      "date_modified": "2024-10-07T03:07:14+00:00", 
      "content_html": "<p>\u5927\u5bb6\u90fd\u77e5\u9053 Kotlin \u6709\u7a7a\u5b89\u5168</p>\n<p>var s: String \u4ee3\u8868\u4e0d\u4e3a\u7a7a</p>\n<p>var s: String? \u4ee3\u8868\u53ef\u4e3a\u7a7a</p>\n<p>\u5947\u8469\u64cd\u4f5c\u6765\u4e86\uff0c\u5728\u6211\u63a5\u624b\u4e4b\u524d\uff0c\u9664\u4e86\u7edd\u5927\u90e8\u5206\u7684\u57fa\u672c\u53d8\u91cf\uff0c\u5176\u4f59\u6240\u6709\u53d8\u91cf\u90fd\u662f String?\u3001Objxx?</p>\n<p>\u4f7f\u7528\u7684\u65f6\u5019\uff1a</p>\n<pre><code class=\"language-kt\">if (S != null) print(s) else throw Exption(\"s shouldn't be null\")\n</code></pre>\n<p>\u6216\u8005\uff1a</p>\n<pre><code class=\"language-kt\">if (obj?.s == null) return\nobj!!.s\n</code></pre>\n<p>\u4e00\u5f00\u59cb\u5f88\u597d\u5947\u8fd9\u4e2a\u8111\u6b8b\u5199\u6cd5\u662f\u600e\u4e48\u6765\u7684</p>\n<p>\u7136\u540e\u9047\u5230\u4e86\u4e00\u4e2a crash \u6211\u627e\u5230\u6839\u6e90\u4e86\u3002\u6211\u5199\u7684\u4ee3\u7801\u91cc\u6ca1\u6709\u7528 String? \uff0c\u4f46\u662f\u5374\u62a5\u4e86 NPE \uff0c\u8d4b\u503c\u7684\u5730\u65b9\u90fd\u67e5\u8fc7\u4e86\uff0c\u4e0d\u5b58\u5728 null \u3002\u6700\u7ec8\u4e0d\u65ad\u5730\u8c03\u8bd5\u53d1\u73b0\u6bcf\u6b21\u9875\u9762 onDestory()\u7684\u65f6\u5019\u4f1a\u6709\u4e2a\u53cd\u5c04\u9012\u5f52\u5730\u5c06\u6240\u6709\u53d8\u91cf\u548c\u53d8\u91cf\u91cc\u7684\u53d8\u91cf\u90fd\u8bbe\u7f6e\u6210 null \uff08\u8bf4\u662f\u5728\u624b\u52a8 GC\u2026\uff09\u3002\u53c8\u56e0\u4e3a\u9b54\u6539\u4e86\u751f\u547d\u5468\u671f+\u534f\u7a0b\uff0c\u8bfb\u53d6\u53d8\u91cf\u7684\u65f6\u5019\u5df2\u7ecf\u662f null \u4e86\uff0c\u7136\u540e\u62a5\u9519==</p>\n<p>\uff01</p>\n", 
      "date_published": "2024-10-05T07:03:32+00:00", 
      "title": "\u5c4e\u5c71\u4ee3\u7801\u4e00\u5219", 
      "id": "https://www.v2ex.com/t/1077764"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/fuhanfeng", 
        "name": "fuhanfeng", 
        "avatar": "https://cdn.v2ex.com/avatar/9e6b/c039/14220_large.png?m=1736744506"
      }, 
      "url": "https://www.v2ex.com/t/1042866", 
      "title": "Kotlin 2.0.0 \u6b63\u5f0f\u7248\u53d1\u5e03\u4e86", 
      "id": "https://www.v2ex.com/t/1042866", 
      "date_published": "2024-05-22T02:55:25+00:00", 
      "content_html": "<p><img alt=\"\" class=\"embedded_image\" loading=\"lazy\" referrerpolicy=\"no-referrer\" rel=\"noreferrer\" src=\"https://i.v2ex.co/SzXT9e53.webp\"/></p>\n<p><a href=\"https://kotlinlang.org/docs/whatsnew20.html\" rel=\"nofollow\">https://kotlinlang.org/docs/whatsnew20.html</a></p>\n<p>GPT-4o \u7684\u603b\u7ed3\uff1a</p>\n<h1>Kotlin 2.0 \u4eae\u70b9</h1>\n<ol>\n<li>\n<p><strong>K2 \u7f16\u8bd1\u5668</strong>\uff1a</p>\n<ul>\n<li><strong>\u7a33\u5b9a</strong>\uff1a\u9ed8\u8ba4\u7528\u4e8e\u6240\u6709\u5e73\u53f0\uff0c\u6027\u80fd\u663e\u8457\u63d0\u5347\u3002</li>\n<li><strong>\u6027\u80fd</strong>\uff1a\u7f16\u8bd1\u4e86 1000 \u4e07\u884c\u4ee3\u7801\uff0c\u6d4b\u8bd5\u4e86 18000 \u5f00\u53d1\u8005\u548c 80000 \u9879\u76ee\u3002</li>\n</ul>\n</li>\n<li>\n<p><strong>IDE \u652f\u6301</strong>\uff1a</p>\n<ul>\n<li>\u65b0\u7248 Kotlin \u63d2\u4ef6\u6346\u7ed1\u5728 IntelliJ IDEA \u548c Android Studio \u4e2d\u3002</li>\n</ul>\n</li>\n<li>\n<p><strong>Gradle \u96c6\u6210</strong>\uff1a</p>\n<ul>\n<li><strong>\u65b0 DSL</strong>\uff1a\u7528\u4e8e\u591a\u5e73\u53f0\u9879\u76ee\u7684\u5b9e\u9a8c\u6027\u7f16\u8bd1\u5668\u9009\u9879\u914d\u7f6e\u3002</li>\n<li><strong>Compose \u63d2\u4ef6</strong>\uff1a\u589e\u5f3a\u5bf9 Jetpack Compose \u7684\u652f\u6301\u3002</li>\n</ul>\n</li>\n<li>\n<p><strong>Lambda \u51fd\u6570</strong>\uff1a</p>\n<ul>\n<li><strong>invokedynamic</strong>\uff1a\u751f\u6210\u66f4\u5c0f\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u4f46 lambda \u4e0d\u53ef\u5e8f\u5217\u5316\u3002</li>\n</ul>\n</li>\n<li>\n<p><strong>Kotlinx-metadata-jvm \u5e93</strong>\uff1a</p>\n<ul>\n<li>\u7a33\u5b9a\u7248\u672c\uff0c\u63d0\u4f9b\u8bfb\u53d6\u548c\u4fee\u6539 JVM \u4e8c\u8fdb\u5236\u6587\u4ef6\u5143\u6570\u636e\u7684 API \u3002</li>\n</ul>\n</li>\n<li>\n<p><strong>Kotlin/Native \u589e\u5f3a</strong>\uff1a</p>\n<ul>\n<li><strong>GC \u76d1\u63a7</strong>\uff1a\u5728 Apple \u5e73\u53f0\u4e0a\u6539\u8fdb\u5783\u573e\u56de\u6536\u6027\u80fd\u76d1\u63a7\u3002</li>\n<li><strong>\u65b9\u6cd5\u51b2\u7a81\u89e3\u51b3</strong>\uff1a\u6539\u8fdb\u4e0e Objective-C \u65b9\u6cd5\u7684\u51b2\u7a81\u5904\u7406\u3002</li>\n</ul>\n</li>\n<li>\n<p><strong>Kotlin/Wasm</strong>\uff1a</p>\n<ul>\n<li>\u652f\u6301\u547d\u540d\u5bfc\u51fa\u548c\u65e0\u7b26\u53f7\u539f\u59cb\u7c7b\u578b\u7684 <code>@JsExport</code> \u51fd\u6570\u3002</li>\n</ul>\n</li>\n<li>\n<p><strong>\u667a\u80fd\u7c7b\u578b\u8f6c\u6362</strong>\uff1a</p>\n<ul>\n<li>\u6539\u8fdb <code>if</code>\u3001<code>when</code> \u548c <code>while</code> \u5757\u4e2d\u7684\u667a\u80fd\u7c7b\u578b\u8f6c\u6362\uff0c\u51cf\u5c11\u624b\u52a8\u7c7b\u578b\u65ad\u8a00\u3002</li>\n</ul>\n</li>\n</ol>\n<hr/>\n<p>Kotlin 2.0.0 \u8bed\u8a00\u5c42\u9762\u6ca1\u6709\u65b0\u7279\u6027\uff0c\u4f46\u662f\u5f15\u5165 K2 \u7f16\u8bd1\u5668\uff0c\u63d0\u9ad8\u4e86\u6027\u80fd\u3002</p>\n<p>\u60f3\u95ee\u4e00\u4e0b\u5927\u5bb6\u4e0a\u6d77/\u676d\u5dde\u6709\u7528 Kotlin \u505a\u670d\u52a1\u7aef\u7684\u516c\u53f8\u5417\uff1f</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/zhwguest", 
        "name": "zhwguest", 
        "avatar": "https://cdn.v2ex.com/avatar/b633/f688/433522_large.png?m=1685067457"
      }, 
      "url": "https://www.v2ex.com/t/1013521", 
      "title": "kotlin \u4e2d\u7684 select \u5230\u5e95\u53ef\u4ee5 select \u54ea\u4e9b\u5185\u5bb9\u554a\uff1f", 
      "id": "https://www.v2ex.com/t/1013521", 
      "date_published": "2024-02-01T13:58:02+00:00", 
      "content_html": "<p>\u597d\u591a\u51fd\u6570\u88ab deprecated \u4e86\uff0c\u6709\u6ca1\u6709\u4e00\u4e2a\u8ddf\u7248\u672c\u76f8\u5173\u7684\u5b98\u65b9\u63cf\u8ff0\uff1f</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/zhwguest", 
        "name": "zhwguest", 
        "avatar": "https://cdn.v2ex.com/avatar/b633/f688/433522_large.png?m=1685067457"
      }, 
      "url": "https://www.v2ex.com/t/1012103", 
      "title": "\u8bf7\u5927\u4f6c\u5e2e\u5fd9\u770b\u4e00\u773c\u6211\u8fd9\u4e2a\u6ce8\u89e3\u4e3a\u4ec0\u4e48\u6ca1\u80fd\u6291\u5236 never used \u8b66\u544a\uff1f", 
      "id": "https://www.v2ex.com/t/1012103", 
      "date_published": "2024-01-27T13:25:05+00:00", 
      "content_html": "<pre><code class=\"language-kotlin\">@Target(AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY_GETTER, AnnotationTarget.PROPERTY_SETTER)\n@Retention(AnnotationRetention.SOURCE)\n@Suppress(\"unused\", \"CanBePrivate\")\nannotation class Api\n</code></pre>\n<p><img alt=\"\u8fd8\u662f\u88ab\u8b66\u544a\u4e86\" class=\"embedded_image\" loading=\"lazy\" referrerpolicy=\"no-referrer\" rel=\"noreferrer\" src=\"https://i.ibb.co/7QLDsgp/api.png\"/></p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/LiYing2016", 
        "name": "LiYing2016", 
        "avatar": "https://cdn.v2ex.com/avatar/53b7/8265/171460_large.png?m=1462193666"
      }, 
      "url": "https://www.v2ex.com/t/1004557", 
      "title": "\u6211\u8001\u4eba\u5bb6\u7ffb\u8bd1\u7684\u300aKotlin \u8bed\u8a00\u53c2\u8003\u6587\u6863\u300b\u4e2d\u6587\u7248", 
      "id": "https://www.v2ex.com/t/1004557", 
      "date_published": "2023-12-29T18:59:49+00:00", 
      "content_html": "<p>\u6700\u65e9\u7684\u7248\u672c\u662f 2016 \u5e74 04 \u6708\uff0c\u4e00\u76f4\u5728\u66f4\u65b0\uff0c\u5230 2023 \u5e74 04 \u6708\u66f4\u65b0\u5230\u4e86 Kotlin 1.8.0</p>\n<p>\u73b0\u5728\u6700\u65b0\u7684 1.9.20 \u6b63\u5728\u7ffb\u8bd1\uff0c\u4e89\u53d6 1 \u5230 2 \u4e2a\u6708\u5185\u5b8c\u6210</p>\n<p>\u5730\u5740\n<a href=\"https://kotlin.liying-cn.net/docs/reference_zh/about_translation.html\" rel=\"nofollow\">https://kotlin.liying-cn.net/docs/reference_zh/about_translation.html</a></p>\n<p>\u4ee3\u7801\u5e93\n<a href=\"https://github.com/LiYing2010/kotlin-web-site\" rel=\"nofollow\">https://github.com/LiYing2010/kotlin-web-site</a></p>\n<p>\u6b22\u8fce\u8bbf\u95ee</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/coderpwh", 
        "name": "coderpwh", 
        "avatar": "https://cdn.v2ex.com/avatar/9527/a2d1/585855_large.png?m=1770607152"
      }, 
      "url": "https://www.v2ex.com/t/996109", 
      "date_modified": "2023-11-29T01:06:06+00:00", 
      "content_html": "<p>\u4f7f\u7528 compose \u5f00\u53d1\u4e86\u8baf\u98de\u661f\u706b\u8ba4\u77e5\u6a21\u578b\u684c\u9762\u7aef\u5e94\u7528\uff0c\u76ee\u524d\u652f\u6301 windows,mac \u7cfb\u7edf\n\u6b22\u8fce\u5404\u4f4d\u4f7f\u7528\uff0c\u5f00\u6e90\u5730\u5740\uff1a <a href=\"https://github.com/pwh-pwh/sparkapidesk\" rel=\"nofollow\">https://github.com/pwh-pwh/sparkapidesk</a>\n\u76ee\u524d\u529f\u80fd\uff08\u7b80\u6d01\uff09\uff0c\u6b22\u8fce\u53cd\u9988\u6216\u8005 pr,\u4e5f\u53ef\u4f5c\u4e3a\u5b66\u4e60\u9879\u76ee\n\u754c\u9762\u622a\u56fe\n<img alt=\"https://github.com/pwh-pwh/sparkapidesk/raw/master/img%2Fmain.png\" class=\"embedded_image\" loading=\"lazy\" referrerpolicy=\"no-referrer\" rel=\"noreferrer\" src=\"https://github.com/pwh-pwh/sparkapidesk/raw/master/img%2Fmain.png\"/></p>\n", 
      "date_published": "2023-11-29T01:05:06+00:00", 
      "title": "\u4f7f\u7528 compose \u5f00\u53d1\u4e86\u8baf\u98de\u661f\u706b\u8ba4\u77e5\u6a21\u578b\u684c\u9762\u7aef\u5e94\u7528", 
      "id": "https://www.v2ex.com/t/996109"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/githmb", 
        "name": "githmb", 
        "avatar": "https://cdn.v2ex.com/gravatar/eedfc3342f1825cee8be1d8a4578a5aa?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/973321", 
      "date_modified": "2023-09-13T23:31:20+00:00", 
      "content_html": "<p>\u6211\u8fd8\u4ee5\u4e3a\u4f1a\u50cf Rust \u4e00\u6837\u628a IO \u51fd\u6570\u90fd\u7528\u5f02\u6b65\u5b9e\u73b0\u4e00\u904d\uff0c\u7ed3\u679c\u53ea\u662f\u628a Job \u653e\u5230 <a href=\"http://Dispatchers.IO\" rel=\"nofollow\">Dispatchers.IO</a> \u7ebf\u7a0b\u6c60\u91cc\u8c03\u5ea6\uff0c\u90a3\u5c82\u4e0d\u662f\u8be5\u5835\u585e\u7684\u8fd8\u662f\u4f1a\u5835\u585e\uff0c\u5982\u679c\u7ebf\u7a0b\u6c60\u91cc\u7684\u6240\u6709\u7ebf\u7a0b\u90fd\u88ab\u5835\u585e\u4e86\uff0c\u5269\u4e0b\u7684 Job \u4e0d\u5c31\u6ca1\u6cd5\u6267\u884c\u4e86\uff0c\u53c8\u4e0d\u662f Go \u8bed\u8a00\u90a3\u6837\u7684\u6709\u6808\u534f\u7a0b\u53ef\u4ee5\u968f\u65f6\u4e2d\u65ad\uff0c\u65e0\u6808\u534f\u7a0b\u5c31\u5e94\u8be5\u7528 NIO \u5b9e\u73b0\u9ad8 IO \u541e\u5410\u91cf\u554a</p>\n<p>\u96be\u9053\u8bf4 Kotlin \u7684\u534f\u7a0b\u76ee\u524d\u7684\u552f\u4e00\u4f5c\u7528\u5c31\u662f\u8ba9\u5b89\u5353\u540c\u5b66\u4e0d\u4f1a\u628a UI \u5361\u6b7b\u5417\uff1f</p>\n", 
      "date_published": "2023-09-13T03:30:48+00:00", 
      "title": "Kotlin \u7684\u534f\u7a0b\u5230\u5e95\u662f\u7528\u6765\u5e72\u561b\u7684\uff1f\u4e3a\u4ec0\u4e48\u6ca1\u6709\u53ef suspend \u7684\u5f02\u6b65 IO \u51fd\u6570\uff1f", 
      "id": "https://www.v2ex.com/t/973321"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/Akitora", 
        "name": "Akitora", 
        "avatar": "https://cdn.v2ex.com/avatar/7ac0/8306/567083_large.png?m=1775664267"
      }, 
      "url": "https://www.v2ex.com/t/972871", 
      "title": "Kotlin \u534f\u7a0b Coroutine \u4e0e Spring Boot \u9879\u76ee\u6574\u5408\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u600e\u6837\u7684\uff1f", 
      "id": "https://www.v2ex.com/t/972871", 
      "date_published": "2023-09-11T15:07:09+00:00", 
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    {
      "author": {
        "url": "https://www.v2ex.com/member/VforVendetta", 
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        "avatar": "https://cdn.v2ex.com/avatar/5e1d/d362/451056_large.png?m=1718169471"
      }, 
      "url": "https://www.v2ex.com/t/959210", 
      "title": "\u8c37\u6b4c\u51fa\u54c1 kotlin \u5165\u95e8\u6559\u7a0b", 
      "id": "https://www.v2ex.com/t/959210", 
      "date_published": "2023-07-24T05:54:42+00:00", 
      "content_html": "<p><a href=\"https://developer.android.com/courses/pathways/android-basics-compose-unit-1-pathway-1?hl=zh-cn#codelab-https://developer.android.com/codelabs/basic-android-kotlin-compose-variables\" rel=\"nofollow\">https://developer.android.com/courses/pathways/android-basics-compose-unit-1-pathway-1?hl=zh-cn#codelab-https://developer.android.com/codelabs/basic-android-kotlin-compose-variables</a></p>\n"
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    {
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      }, 
      "url": "https://www.v2ex.com/t/950972", 
      "date_modified": "2023-06-23T00:45:16+00:00", 
      "content_html": "\u5f88\u591a\u516c\u53f8\u4e0d\u613f\u610f\u4ece java \u8f6c\u5411 kotlin \uff0c\u539f\u56e0\u662f\u4f60\u80fd\u60f3\u5230\u7684\u51e0\u4e4e\u6240\u6709\u7f16\u7a0b\u95ee\u9898\uff0cbug \uff0c\u4e00\u641c\u7d22\u90fd\u4f1a\u6709\u4e00\u5806 java \u6848\u4f8b\uff0c\u800c kotlin \uff0c\u90a3\u5219\u5c11\u7684\u53ef\u601c\uff0c\u56e0\u4e3a kotlin \u6bd5\u7adf\u662f\u4e00\u95e8\u65b0\u751f\u8bed\u8a00\uff0c\u867d\u7136 java \u53ef\u4ee5\u8f6c\u4e3a kotlin \uff0c\u4f46\u5bf9 kotlin \u65b0\u624b\u8fd8\u662f\u4e0d\u53cb\u597d\uff0c\u8f6c\u6362\u7ecf\u5e38\u4f1a\u4ea7\u751f\u4e00\u4e9b\u7f16\u8bd1\u9519\u8bef\uff0c\u65b0\u624b\u4e00\u7b79\u83ab\u5c55\u3002<br /><br />\u5982\u679c\u6709\u5927\u91cf\u7684 kotlin \u6e90\u4ee3\u7801\u53ef\u53c2\u8003\uff0c\u8fd9\u4e2a\u95ee\u9898\u4f1a\u5927\u6709\u6539\u89c2\u3002<br /><br />BigCode \u6570\u636e\u96c6\u662f\u4e00\u4e2a\u5f00\u653e\u7684\u79d1\u5b66\u5408\u4f5c\u9879\u76ee\uff0c\u65e8\u5728\u8d1f\u8d23\u4efb\u5730\u8bad\u7ec3\u5927\u8bed\u8a00\u6a21\u578b\uff0c\u4ee5\u5e94\u7528\u4e8e\u7f16\u7801\u9886\u57df\u3002\u8be5\u6570\u636e\u96c6\u5305\u542b\u4e86\u6765\u81ea Stack Exchange \u5e73\u53f0\u4e0a\u7684\u95ee\u9898\u548c\u7b54\u6848\uff0c\u5305\u62ec StackOverflow \u7684\u7f16\u7a0b\u8bdd\u9898\u4e0b\u7684\u95ee\u9898\u548c\u7b54\u6848\u3002BigCode \u6570\u636e\u96c6\u53ef\u4ee5\u7528\u4e8e\u8bb8\u591a\u81ea\u7136\u8bed\u8a00\u5904\u7406\u4efb\u52a1\uff0c\u5982\u4ee3\u7801\u8865\u5168\u3001\u4ee3\u7801\u6458\u8981\u3001\u4ee3\u7801\u641c\u7d22\u7b49\u3002\u6b64\u5916\uff0cBigCode \u6570\u636e\u96c6\u8fd8\u53ef\u4ee5\u7528\u4e8e\u7814\u7a76\u4ee3\u7801\u7684\u8bed\u4e49\u548c\u7ed3\u6784\uff0c\u4ee5\u53ca\u4ee3\u7801\u7684\u6f14\u5316\u548c\u53d8\u5316\u3002BigCode \u9879\u76ee\u4e2d\u5305\u542b\u4e86 StarCoder \u3001The Stack \u548c SantaCoder \u7b49\u5de5\u4ef6\uff0c\u5176\u4e2d StarCoder \u662f\u7528\u4e8e\u7f16\u7801\u7684\u6700\u5148\u8fdb\u7684\u8bed\u8a00\u6a21\u578b\uff0cThe Stack \u662f\u53ef\u7528\u7684\u6700\u5927\u7684\u9884\u8bad\u7ec3\u6570\u636e\u96c6\uff0c\u5305\u542b\u5bbd\u5bb9\u7684\u4ee3\u7801\uff0c\u800c SantaCoder \u662f\u4e00\u4e2a\u53c2\u6570\u8fbe\u5230 1.1B \u7684\u7f16\u7801\u6a21\u578b\u3002<br /><br />BigCode \u4e2d\u5c31\u6709\u5927\u91cf\u7684 kotlin \u6e90\u7801\uff0c\u6570\u91cf\u662f 13G, 375 \u4e07\u4e2a kt \u6587\u4ef6.<br />\u4e0b\u8f7d\u65b9\u6cd5\uff1a <a target=\"_blank\" href=\"https://huggingface.co/datasets/bigcode/the-stack/tree/main/data\" rel=\"nofollow noopener\">https://huggingface.co/datasets/bigcode/the-stack/tree/main/data</a>  <br />                  \u6253\u5f00\u540e\uff0c\u70b9\u51fb\u5e95\u90e8\u7684 Load more files, \u76f4\u5230\u770b\u89c1 kotlin, \u70b9\u51fb kotlin<br />                  \u5c31\u4f1a\u770b\u5230\u6709 15 \u4e2a parquet \u6587\u4ef6\u4e0b\u8f7d<br />\u53ef\u4ee5\u7528 Python \u5bf9 parquet \u6587\u4ef6\u89e3\u538b\uff1a<br /><br />   import pyarrow.parquet as pq   <br />   table = pq.read_table('input.parquet')<br />   table.to_pandas().to_csv('output.csv')<br /><br />\u8fd9\u6837\u4f60\u5c31\u53ef\u4ee5\u5728\u672c\u5730\u68c0\u7d22 kotlin \u6e90\u4ee3\u7801\u4e86\uff0c<br />\u5728\u7ebf\u641c\u7d22\uff1a\u6e90\u4ee3\u7801\u641c\u7d22\u7f51\u7ad9   <a target=\"_blank\" href=\"http://www.tanglib.com\" rel=\"nofollow noopener\">www.tanglib.com</a> \u63d0\u4f9b\u4e86\u672c kotlin \u6e90\u4ee3\u7801\u6570\u636e\u96c6\u5728\u7ebf\u5168\u6587\u68c0\u7d22\u3002", 
      "date_published": "2023-06-23T00:44:44+00:00", 
      "title": "kotlin \u6e90\u4ee3\u7801\u6570\u636e\u96c6", 
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    {
      "author": {
        "url": "https://www.v2ex.com/member/Byl2024", 
        "name": "Byl2024", 
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      }, 
      "url": "https://www.v2ex.com/t/947375", 
      "title": "KMM \u4e2d\u76ee\u524d\u6700\u6210\u719f\uff0c\u6700\u63a8\u8350\u7684 shared viewmodel \u65b9\u6848\u662f\u4ec0\u4e48.", 
      "id": "https://www.v2ex.com/t/947375", 
      "date_published": "2023-06-09T09:17:37+00:00", 
      "content_html": "<p>\u636e\u6211\u6240\u67e5\uff0cUI \u5c42, \u6b63\u5728\u9010\u6b65\u7edf\u4e00, \u6bd4\u5982\u8fd1\u671f\u63a8\u51fa\u7684 Compose Multiplatform, VM \u5c42\u8c8c\u4f3c\u5b98\u65b9\u6ca1\u6709\u63a8\u51fa\u81ea\u5df1\u7684\u89e3\u51b3\u65b9\u6848. </p>\n<p>\u6bd4\u5982\u5728 Compose Multiplatform \u4e2d\u63d0\u4f9b\u7684\u7684\u4f8b\u5b50\u90fd\u662f\u5f15\u7528\u4e09\u65b9\u7684\uff0c\u5982 MVIKotlin(\n\u89c1 <a href=\"https://github.com/JetBrains/compose-multiplatform/blob/master/examples/todoapp/common/main/build.gradle.kts\" rel=\"nofollow\">https://github.com/JetBrains/compose-multiplatform/blob/master/examples/todoapp/common/main/build.gradle.kts</a>)</p>\n<p>\u6240\u4ee5 VM \u5c42\u73b0\u5728\u6700\u63a8\u8350\u7684\u89e3\u51b3\u65b9\u6848\u662f\u4ec0\u4e48\u6837\u7684\uff1f</p>\n"
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    {
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        "url": "https://www.v2ex.com/member/r1nice", 
        "name": "r1nice", 
        "avatar": "https://cdn.v2ex.com/gravatar/aa6229f9afc2d83475e724f9d45ff654?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/924685", 
      "title": "\u200b Java /kotlin AST \u6784\u5efa\u76f8\u5173\uff0c\u60ac\u8d4f 200 \u6c42\u89e3\uff0c\u4eba\u5df2\u7ecf\u9ebb\u4e86", 
      "id": "https://www.v2ex.com/t/924685", 
      "date_published": "2023-03-16T15:17:09+00:00", 
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\uff0c\u4ece\u91cc\u9762\u627e\u5230\u5bf9\u5e94\u7684\u5bf9\u8c61\u3002\n\u679d\u5e72\u8282\u70b9\u5219\u91cc\u9762\u53ef\u4ee5\u5b58\u50a8\u53f6\u5b50\u8282\u70b9\u6216\u679d\u5e72\u8282\u70b9\u3002\n\u4ed6\u4eec\u6709\u4e09\u79cd\u7c7b\u578b\uff0c\u5355\u8282\u70b9\u578b\uff0clist \u578b\u548c pair \u578b\uff0c\u5355\u8282\u70b9\u7684\uff0c\u6bd4\u5982\u63d0\u53d6\u76ee\u6807\u602a\u517d\u7684\u8840\u91cf\uff0c\u91cc\u9762\u5c31\u53ea\u9700\u8981\u8bb0\u5f55\u4e00\u4e2a\u6307\u5411\u602a\u517d\u7684\u53f6\u5b50\u8282\u70b9\u3002\u53cc\u8282\u70b9\u6700\u5e38\u89c1\uff0c\u52a0\u51cf\u4e58\u9664\uff0coperation \u65b9\u6cd5\u5c31\u662f\u5c06\u4e24\u4e2a\u8282\u70b9 operation \u7684\u503c\u8fdb\u884c\u8fd0\u7b97\u3002list \u8282\u70b9\u5219\u662f\u7c7b\u4f3c in \uff0c\u4f20\u5165\u4e00\u4e2a list \uff0c\u4ed6\u4ece\u91cc\u9762\u8fd4\u56de\u4e00\u4e2a\u7b26\u5408\u9700\u6c42\u7684\u503c\u3002\n\u7136\u540e\u7b2c\u4e09\u5c42\u5c31\u662f\u5bf9\u8fd0\u7b97\u76ee\u6807\u7684\u7c7b\u578b\u8fdb\u884c\u5b9a\u4e49\u7684\u5c42\u3002\u6bd4\u5982 equals \uff0c\u6709\u9488\u5bf9\u6570\u5b57\u7684 equals \uff0c\u6709\u9488\u5bf9\u602a\u7269\u5b9e\u4f53\u7684 equals \uff0c\u7b49\u7b49\uff0c\u8fd9\u4e00\u5c42\u5c06\u4ed6\u4eec\u8fdb\u884c\u5c01\u88c5\u3002\n\u7b2c\u56db\u5c42\u662f\u5c01\u88c5\u5c42\uff0c\u8fd9\u5c42\u4f1a\u5c06\u6240\u6709\u6cdb\u578b\u5168\u90e8\u5339\u914d\uff0c\u4e0d\u4f1a\u51fa\u73b0\u9700\u8981\u5728\u5916\u9762\u8f93\u5165\u6cdb\u578b\u7684\u60c5\u51b5\u3002\n\u5728\u6700\u5916\u4fa7\uff0c\u4f1a\u6709\u4e00\u4e2a tree \u5b9e\u4f53\uff0c\u8fd9\u4e2a\u5b9e\u4f53\u53ef\u4ee5\u8bbf\u95ee\u6839\u8282\u70b9\uff0c\u5e76\u8fdb\u884c\u5982\u6df1\u5ea6\u641c\u7d22\u6216\u8005\u662f\u67e5\u627e\u8282\u70b9\uff0c\u66ff\u6362\u8282\u70b9\u4e4b\u7c7b\u7684\u884c\u4e3a\u3002\n\u73b0\u5728\u7684\u95ee\u9898\u662f\uff1a\n\u6211\u60f3\u8981\u4e00\u4e2a\u65b9\u5f0f\u80fd\u5c06\u8fd9\u4e2a\u6811\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\uff0c\u5e76\u901a\u8fc7\u8bfb\u53d6\u7528\u6237\u8f93\u5165\u5c06\u5176\u8f6c\u6362\u4e3a\u4e00\u4e2a\u6811\u3002\n\u6211\u6700\u5f00\u59cb\u662f\u6253\u7b97\u4ece\u6839\u8282\u70b9\u5411\u53f6\u5b50\u8282\u70b9\u8fdb\u884c\u6784\u5efa\uff0c\u4f46\u6211\u5f88\u5feb\u53d1\u73b0\u8fd9\u4e2a\u65b9\u6cd5\u7684\u4e0d\u53ef\u64cd\u4f5c\u6027\uff1a\u56e0\u4e3a\u6211\u7684\u6811\u4e0d\u662f\u5b8c\u5168\u7684\u4e8c\u53c9\u6811\uff0c\u6709\u5e38\u6570\u548c\u672a\u77e5\u6570\u4e24\u79cd\u6ca1\u6709\u5b50\u8282\u70b9\u6982\u5ff5\u7684\u6811\uff0c\u4ed6\u4eec\u53ea\u6709\u4e00\u4e2a value \uff0c\u800c\u4e14\u7531\u4e8e\u6211\u6709\u4e09\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u679d\u5e72\u8282\u70b9\uff0c\u6211\u65e0\u6cd5\u4f7f\u7528\u4e00\u4e2a\u7edf\u4e00\u7684\uff0c\u5199\u5728\u57fa\u7c7b\u91cc\u7684 addNode \u65b9\u6cd5\u5728\u8282\u70b9\u751f\u6210\u540e\u5bf9\u5b50\u8282\u70b9\u8fdb\u884c\u64cd\u4f5c\uff0c\u6211\u5fc5\u987b\u4f7f\u7528 if else \u624d\u884c\uff0c\u8fd9\u8fdd\u80cc\u4e86\u6cdb\u578b\u7684\u521d\u8877\uff0c\u4e5f\u5341\u5206\u4e0d\u7075\u6d3b\uff0c\u6240\u4ee5\u6211\u5fc5\u987b\u4ece\u6700\u4e0b\u65b9\u7684\u53f6\u5b50\u8282\u70b9\u5f80\u4e0a\u65b9\u6784\u5efa\u3002\n\u6211\u7684\u6253\u7b97\u662f\uff0c\u5148\u7b5b\u9009\u51fa\u6240\u6709\u7684\u53f6\u5b50\u8282\u70b9\uff0c\u7136\u540e\u50cf\u642d\u91d1\u5b57\u5854\u4e00\u6837\uff0c\u7528 1 \uff0c2 \uff0clist \u4e2a\u8282\u70b9\u5c06\u7b26\u53f7\u6784\u5efa\u51fa\u6765\uff0c\u7136\u540e\u5728\u8fd9\u4e2a\u7b26\u53f7\u4e0a\u518d\u548c\u5176\u4ed6\u7b26\u53f7\u6216\u8005\u8282\u70b9\u4e00\u8d77\u642d\u7b26\u53f7\uff0c\u6700\u540e\u642d\u5230\u6839\u8282\u70b9\u3002\u4f46\u662f\u8fd9\u6709\u4e2a\u95ee\u9898\uff1a\u5f53\u6211\u5728\u4f7f\u7528\u5982 numberEqualsNode \uff0c\u8fd9\u79cd\u5de6\u53f3\u8282\u70b9\u4e00\u4e2a\u662f int \uff0c\u53e6\u4e00\u4e2a\u4e5f\u662f int \uff0c\u8f93\u51fa\u662f bool \u7684\u8282\u70b9\uff0c\u6211\u8be5\u5982\u4f55\u5224\u65ad\u8f93\u5165\u7684 node \u7684\u6cdb\u578b\u662f int \uff1f\u5982\u679c\u4e0d\u5224\u65ad\uff0c\u90a3\u4e48\u5de6\u53f3\u8282\u70b9\u8bbe\u7f6e\u6cdb\u578b\u7684\u610f\u4e49\u4f55\u5728\uff1f\n\u7531\u4e8e java \u7684\u6cdb\u578b\u662f\u5728\u8fd0\u884c\u4e4b\u540e\u4f1a\u88ab\u5220\u6389\u7684\u548c\u6ce8\u91ca\u4e00\u6837\u7684\u7528\u4e8e\u68c0\u67e5\u7f16\u8bd1\u7684\u4e1c\u897f\uff0c\u6240\u4ee5\u6211\u4e0d\u80fd\u76f4\u63a5 if node is node&lt;int&gt;\uff0c\u4f46\u90a3\u6837\u6211\u600e\u4e48\u68c0\u67e5\u8fd9\u4e2a\u8282\u70b9\uff1f</p>\n<p>\u5907\u6ce8\uff1a\u65e0\u6cd5\u6362\u8bed\u8a00\uff0c\u6216\u8005\u4f7f\u7528 lua \uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 kotlin \u548c scala \u3002\u53ef\u4ee5\u6539\u53d8\u4e00\u4e9b\u8bbe\u8ba1\uff0c\u4f46\u4e0d\u80fd\u628a\u6574\u4e2a\u5e95\u5c42\u90fd\u7ed9\u5228\u4e86\u3002</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/nnegier", 
        "name": "nnegier", 
        "avatar": "https://cdn.v2ex.com/gravatar/00b9dc80a372050eec8fbfa5200a6186?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/908917", 
      "title": "\u6709\u6ca1\u6709 Kotlin \u8bb2\u534f\u7a0b\u6bd4\u8f83\u597d\u7684\u4e66\u7c4d\u6216\u535a\u5ba2\u8fde\u8f7d", 
      "id": "https://www.v2ex.com/t/908917", 
      "date_published": "2023-01-14T08:49:46+00:00", 
      "content_html": "<p>\u6211\u76ee\u524d\u53ea\u641c\u5230\u4e00\u672c\u4e66\u662f\u4e13\u95e8\u8bb2\u534f\u7a0b\u7684\u300a\u6df1\u5165\u7406\u89e3 Kotlin \u534f\u7a0b\u300b\uff0c\u6211\u4f30\u6478\u7740\u6211\u76ee\u524d\u770b\u4e0d\u592a\u61c2\uff0c\u5e0c\u671b\u53ef\u4ee5\u6709\u5176\u5b83\u7684\u63a8\u8350\uff0c\u901a\u8fc7\u7ec3\u4e60\u53ef\u4ee5\u6df1\u5165\u6d45\u51fa\u81ea\u5df1\u5f04\u4e00\u4e9b\u534f\u7a0b\u6846\u67b6\u7684\u90a3\u79cd\u3002</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/coderstory", 
        "name": "coderstory", 
        "avatar": "https://cdn.v2ex.com/avatar/3c9c/7f07/178817_large.png?m=1659344747"
      }, 
      "url": "https://www.v2ex.com/t/885193", 
      "date_modified": "2022-10-08T03:30:49+00:00", 
      "content_html": "<pre><code>  fun setValue(variables: Map&lt;String, Any&gt;, value: Any?) {\n        val instance = operand.eval(variables) ?: throw NullPointerException(\"instance is null\")\n\n        if (instance is LogicList&lt;*&gt;) {\n            instance.set(property.key.replace(\"[\", \"\").replace(\"]\", \"\").trim().toInt(), value)\n        } else {\n            throw IllegalArgumentException(\"\u53d8\u91cf ${(operand as Variable).key} \u4e0d\u662f\u6570\u7ec4\")\n        }\n    }\n    \n</code></pre>\n<p>\u4ee3\u7801\u5982\u4e0a instance.set \u65b9\u6cd5  idea \u63d0\u793a\u6211\u7b2c\u4e8c\u4e2a\u53c2\u6570 element \u662f NoThing \u7c7b\u578b \u5bfc\u81f4\u6211 set \u65b9\u6cd5\u65e0\u6cd5\u8c03\u7528</p>\n<pre><code>Kotlin: Type mismatch: inferred type is Any? but Nothing was expected\n</code></pre>\n<p>\u76f4\u63a5\u7f16\u8bd1 \u62a5\u4e86\u5982\u4e0a\u9519\u8bef instance \u672c\u8eab\u662f Any?\u7c7b\u578b\u7684\uff0c\u7531\u4e8e\u505a\u4e86 null \u6821\u9a8c\uff0c\u6240\u4ee5\u662f Any \u7c7b\u578b\u7684\u3002\nLogicList \u662f ArrayList \u7684\u6269\u5c55\u7c7b\uff0cset \u65b9\u6cd5\u53c8 List \u63d0\u4f9b\u7684\u3002\n\u8fd9\u8fb9\u6211\u4e0d\u592a\u6e05\u695a\u8981\u600e\u4e48\u6539\u4e86\uff0c\u6211\u672c\u8eab\u4e5f\u4e0d\u592a\u61c2 kotlin \u3002</p>\n", 
      "date_published": "2022-10-08T03:27:41+00:00", 
      "title": "ArrayList.set \u63d0\u793a \u7b2c\u4e8c\u4e2a\u53c2\u6570 element \u7c7b\u578b\u662f NoThing \uff1f", 
      "id": "https://www.v2ex.com/t/885193"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/shuanglinzui", 
        "name": "shuanglinzui", 
        "avatar": "https://cdn.v2ex.com/avatar/c5f3/0263/91498_large.png?m=1611206296"
      }, 
      "url": "https://www.v2ex.com/t/883324", 
      "date_modified": "2022-09-27T08:50:37+00:00", 
      "content_html": "<p>RT\n\u4e0d\u60f3\u5199 java \u4e86\u3002</p>\n", 
      "date_published": "2022-09-27T08:49:55+00:00", 
      "title": "\u54ea\u4e9b\u516c\u53f8\u540e\u7aef\u7528 kotlin \u5199\u7684", 
      "id": "https://www.v2ex.com/t/883324"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/bootvue", 
        "name": "bootvue", 
        "avatar": "https://cdn.v2ex.com/gravatar/52edce86633f4c335d03998cce737f6e?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/868993", 
      "date_modified": "2022-07-27T05:42:02+00:00", 
      "content_html": "\u5b57\u7b26\u4e32\u8868\u8fbe\u5f0f      \"s1 + ( s2 - s3 )\"     \u96c6\u5408 s1 s2 s3<br /><br />kotlin \u4e2d\u600e\u4e48\u8ba9\u9884\u5b9a\u4e49\u7684\u5b57\u7b26\u4e32\u4f5c\u4e3a\u8868\u8fbe\u5f0f\u6267\u884c     \u5b9e\u73b0\u7c7b\u4f3c js \u4e2d eval ( \"\u8868\u8fbe\u5f0f\" )\u7684\u6548\u679c   \u6267\u884c\u5b8c\u8fd4\u56de\u96c6\u5408\u7c7b\u578b\u7684\u7ed3\u679c", 
      "date_published": "2022-07-27T04:26:02+00:00", 
      "title": "kotlin \u8868\u8fbe\u5f0f\u5f15\u64ce", 
      "id": "https://www.v2ex.com/t/868993"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/jeesk", 
        "name": "jeesk", 
        "avatar": "https://cdn.v2ex.com/gravatar/ad011d1d1e836aac8ae7bdc3a5b35c2f?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/862539", 
      "title": "\u6700\u8fd1\u5728\u770b Kotlin \u522b\u4eba\u4e00\u4e9b\u4ee3\u7801\uff0c \u770b\u5230\u5982\u4e0b\u7684\u4ee3\u7801\u60ca\u5446\u4e86", 
      "id": "https://www.v2ex.com/t/862539", 
      "date_published": "2022-06-27T10:54:17+00:00", 
      "content_html": "```<br />class Gallery_1(val context: Context) {<br />    private val contentResolver by lazy {<br />        context.contentResolver<br />    }<br /><br />    //<br />    class Album(<br />        val id: String,<br />        val name: String,<br />        var count: Long = 0,<br />        // ? \u8868\u793a\u53ef\u4ee5\u63a5\u53d7\u7a7a<br />        var uri: Uri? = null,<br />        var file: File? = null<br />    )<br />```<br />class \u540e\u9762\u8ddf\u4e0a\u5c0f\u62ec\u53f7\uff0c \u641e\u5f97\u6211\u5b8c\u5168\u4e0d\u77e5\u9053\u8fd9\u662f\u4ec0\u4e48\u610f\u601d\u4e86 \u65e0\u6cd5\u662f java, scala \uff0cgo \u8fd8\u662f js \u90fd\u6ca1\u6709\u8fd9\u7528\u6cd5\uff0ckotlin \u76f4\u63a5\u4e0d\u6309\u5957\u8def\u51fa\u724c\uff0c \u665a\u4e0a\u4e5f\u6ca1\u6709\u67e5\u5230\u8fd9\u4e2a Album \u662f\u4ec0\u4e48\u7528\u6cd5\uff0c \u6709\u6ca1\u6709 kotlin \u7684\u5927\u4f6c\u80fd\u8bb2\u4e00\u8bb2\u3002"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/714105382", 
        "name": "714105382", 
        "avatar": "https://cdn.v2ex.com/avatar/76aa/cd44/320068_large.png?m=1532429350"
      }, 
      "url": "https://www.v2ex.com/t/830515", 
      "title": "Kotlin \u7684\u534f\u7a0b\u662f\u771f\u534f\u7a0b\u5417\uff1f\u88ab b \u7ad9\u535a\u4e3b\u641e\u8499\u4e86", 
      "id": "https://www.v2ex.com/t/830515", 
      "date_published": "2022-01-25T07:51:28+00:00", 
      "content_html": "<p>\u80fd\u505a\u5230\u7c7b\u4f3c golang goroutine \u5b8c\u5168\u4e0d\u963b\u585e\u4efb\u4f55 os thread \u8fdb\u884c io \u4e4b\u7c7b\u7684\u8bbf\u95ee\u5e76\u5728\u5f97\u5230\u7ed3\u679c\u540e\u81ea\u52a8\u628a\u534f\u7a0b\u6302\u8f7d\u5230\u7ebf\u7a0b\u7ee7\u7eed\u6267\u884c\uff1f</p>\n<p>\u89c6\u9891\u4e0a\u8bf4\u4e0d\u80fd\uff1a [ [\u7801\u4e0a\u5f00\u5b66] \u5230\u5e95\u4ec0\u4e48\u662f\u300c\u975e\u963b\u585e\u5f0f\u300d\u6302\u8d77\uff1f\u534f\u7a0b\u771f\u7684\u6bd4\u7ebf\u7a0b\u66f4\u8f7b\u91cf\u7ea7\u5417\uff1f-\u54d4\u54e9\u54d4\u54e9]  <a href=\"https://b23.tv/qIkWUmo\" rel=\"nofollow\">https://b23.tv/qIkWUmo</a></p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/sucvia", 
        "name": "sucvia", 
        "avatar": "https://cdn.v2ex.com/gravatar/653f6f01cc90232320a3242ee1bd7cba?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/827831", 
      "title": "\u6709\u6ca1\u6709\u4eba\u80fd\u5e2e\u6211\u89e3\u91ca\u4e00\u4e0b,\u8fd9\u91cc\u9762\u7684\u4ee3\u7801.\u5982\u679c\u6211\u521b\u5efa\u4e00\u4e2a\u65b0\u7a97\u53e3,\u6309\u7167\u8fd9\u4e2a\u903b\u8f91,\u600e\u4e48\u663e\u793a\u51fa\u6765", 
      "id": "https://www.v2ex.com/t/827831", 
      "date_published": "2022-01-12T07:27:21+00:00", 
      "content_html": "<p>package com.example.myapplication2</p>\n<p>import android.os.Bundle\nimport com.google.android.material.snackbar.Snackbar\nimport androidx.appcompat.app.AppCompatActivity\nimport androidx.navigation.findNavController\nimport androidx.navigation.ui.AppBarConfiguration\nimport androidx.navigation.ui.navigateUp\nimport androidx.navigation.ui.setupActionBarWithNavController\nimport android.view.Menu\nimport android.view.MenuItem\nimport com.example.myapplication2.databinding.ActivityMainBinding</p>\n<p>class MainActivity : AppCompatActivity() {</p>\n<pre><code>private lateinit var appBarConfiguration: AppBarConfiguration //\u521b\u5efa 2 \u4e2a\u53d8\u91cf\nprivate lateinit var binding: ActivityMainBinding\n\noverride fun onCreate(savedInstanceState: Bundle?) {\n    super.onCreate(savedInstanceState)\n\n    binding = ActivityMainBinding.inflate(layoutInflater)\n    setContentView(binding.root)\n\n    setSupportActionBar(binding.toolbar)\n\n    val navController = findNavController(R.id.nav_host_fragment_content_main)\n    appBarConfiguration = AppBarConfiguration(navController.graph)\n    setupActionBarWithNavController(navController, appBarConfiguration)\n\n    binding.fab.setOnClickListener { view -&gt;\n        Snackbar.make(view, \"Replace with your own action\", Snackbar.LENGTH_LONG)\n            .setAction(\"Action\", null).show()\n    }\n}\n\noverride fun onCreateOptionsMenu(menu: Menu): Boolean {\n    // Inflate the menu; this adds items to the action bar if it is present.\n    menuInflater.inflate(R.menu.menu_main, menu)\n    return true\n}\n\noverride fun onOptionsItemSelected(item: MenuItem): Boolean {\n    return when (item.itemId) {\n        R.id.action_settings -&gt; true\n        else -&gt; super.onOptionsItemSelected(item)\n    }\n}\n\noverride fun onSupportNavigateUp(): Boolean {\n    val navController = findNavController(R.id.nav_host_fragment_content_main)\n    return navController.navigateUp(appBarConfiguration)\n            || super.onSupportNavigateUp()\n}\n</code></pre>\n<p>}</p>\n<p>\u6211\u662f\u4e2a\u840c\u65b0,\u521a\u5b66 Kotlin,\u6709\u6ca1\u6709\u63a8\u8350\u7fa4\u4e00\u8d77\u5b66\u4e60?</p>\n<p>\u6309\u7167\u4ee5\u4e0a\u4ee3\u7801,\u5982\u679c\u6211\u6709\u4e2a\u6309\u94ae id=\"create_button\" ,\u6309\u4e0b\u8f7d\u5165 test_window.xml \u7a97\u53e3.\ntest_window.xml \u91cc\u9762\u6709\u4ec0\u4e48\u8bb2\u7a76\u5417?</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/Leviathann", 
        "name": "Leviathann", 
        "avatar": "https://cdn.v2ex.com/gravatar/d3b22910a49ecf620ab67790d7f594eb?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/807895", 
      "title": "\u600e\u4e48\u89e3\u51b3 public reified \u51fd\u6570\u4f1a\u8981\u6c42\u6240\u6709\u7528\u5230\u7684\u4f9d\u8d56\u90fd\u662f public \u7684\u95ee\u9898", 
      "id": "https://www.v2ex.com/t/807895", 
      "date_published": "2021-10-14T13:43:02+00:00", 
      "content_html": "\u6bd4\u5982\u6709\u4e2a object: JsonUtils\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u5b9a\u5236\u8fc7\u7684 jackson \u7684 objectMapper<br />\u7136\u540e \u8fd9\u4e2a JsonUtils \u6709\u4e2a\u53cd\u5e8f\u5217\u5316\u65b9\u6cd5\u662f\u66b4\u9732\u7684\u4e00\u4e2a reified \u51fd\u6570\uff0c\u7136\u540e\u5185\u90e8\u8c03\u7528 objectMapper \u7684 readValue \u65b9\u6cd5<br />\u4f46\u95ee\u9898\u662f reified \u51fd\u6570\u7684\u6240\u6709\u4f9d\u8d56\u90fd\u5fc5\u987b\u662f public\uff0c\u5bfc\u81f4\u8fd9\u4e2a\u5185\u90e8\u7684 objectMapper \u4e5f\u5fc5\u987b\u662f public<br /><br />\u867d\u7136\u63d0\u4ea4\u4ee3\u7801\u90fd\u6709 code review \u80af\u5b9a\u6ca1\u4eba\u4f1a\u53bb\u5728\u522b\u7684\u5730\u65b9\u4fee\u6539\u8fd9\u4e2a objectmapper\uff0c\u4f46\u662f\u603b\u611f\u89c9\u602a\u602a\u7684<br /><br />\u6216\u8005\u8bf4 kotlin \u4e3a\u5565\u4e0d\u80fd\u533a\u5206\u4e00\u4e0b\u7f16\u8bd1\u65f6\u7684 private \u548c\u8fd0\u884c\u65f6\u7684 private"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/Leviathann", 
        "name": "Leviathann", 
        "avatar": "https://cdn.v2ex.com/gravatar/d3b22910a49ecf620ab67790d7f594eb?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/793491", 
      "title": "Result \u7684\u65b9\u5f0f\u5904\u7406\u5f02\u5e38\u7528\u7684\u591a\u5417\uff0c\u6211\u770b\u4e86\u4e0b\u597d\u50cf\u548c\u6bd4\u8f83\u53d7\u597d\u8bc4\u7684 rust result \u7528\u6cd5\u5dee\u4e0d\u591a", 
      "id": "https://www.v2ex.com/t/793491", 
      "date_published": "2021-08-03T17:44:15+00:00", 
      "content_html": "\u4f46\u662f\u7f51\u4e0a\u641c\u4e86\u4e0b\u597d\u50cf\u5b8c\u5168\u6ca1\u4ec0\u4e48\u70ed\u5ea6"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/zengqz", 
        "name": "zengqz", 
        "avatar": "https://cdn.v2ex.com/gravatar/7f1a5c4da5523e9392a5e9c9e49fb045?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/788273", 
      "title": "Kotlin \u66f4\u6362\u4e86\u65b0 logo\uff1a\u66f4\u52a0\u7acb\u4f53\u3001\u66f4\u52a0\u6e05\u6670", 
      "id": "https://www.v2ex.com/t/788273", 
      "date_published": "2021-07-08T04:21:05+00:00", 
      "content_html": "<p><img alt=\"\" class=\"embedded_image\" loading=\"lazy\" referrerpolicy=\"no-referrer\" rel=\"noreferrer\" src=\"https://content.hackertalk.net/pub/P50ezX-wzj3R8w\"/></p>\n<p>\u8be6\u89c1\u7ffb\u8bd1\u62a5\u544a\uff1a<a href=\"https://hackertalk.net/post/200933954890108928\" rel=\"nofollow\">\u91cd\u65b0\u8bbe\u8ba1\u7684 Kotlin Logo</a></p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/zengqz", 
        "name": "zengqz", 
        "avatar": "https://cdn.v2ex.com/gravatar/7f1a5c4da5523e9392a5e9c9e49fb045?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/785730", 
      "title": "Kotlin 1.5.20 \u53d1\u5e03\u4e86\uff5e\u5feb\u6765\u770b\u770b\u65b0\u7279\u6027", 
      "id": "https://www.v2ex.com/t/785730", 
      "date_published": "2021-06-25T03:57:27+00:00", 
      "content_html": "<p>\u53ef\u4ee5\u652f\u6301\u76f4\u63a5\u8c03\u7528 java lombok \u751f\u6210\u7684\u4ee3\u7801\u4e86</p>\n<p><a href=\"https://hackertalk.net/post/196229002502443008\" rel=\"nofollow\">\u4e2d\u6587\u7248\u65b0\u7279\u6027\u4e00\u89c8</a></p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/yazinnnn", 
        "name": "yazinnnn", 
        "avatar": "https://cdn.v2ex.com/gravatar/a524fa152f42c833f1e93100e07a12af?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/785309", 
      "title": "\u5173\u4e8e kotlin \u5904\u7406\u591a\u4e2a\u53ef\u7a7a\u7c7b\u578b\u7684\u53d8\u91cf\u7684\u95ee\u9898", 
      "id": "https://www.v2ex.com/t/785309", 
      "date_published": "2021-06-23T06:41:22+00:00", 
      "content_html": "<pre><code class=\"language-kotlin\">class A\nclass B\n\nval a: A? = null\nval b: B? = null\n\nfun foo(a: A, b: B) {\n    println(a)\n    println(b)\n}\n\nsuspend fun main() {\n    a?.let { b?.let { foo(a, b) } }\n}\n</code></pre>\n<p>\u9664\u4e86<code>a?.let { b?.let { foo(a, b) } }</code>\u8fd9\u79cd\u5f62\u5f0f\u548c<code> if a!= null &amp;&amp; b!= null</code>,\u8fd8\u6709\u5565\u5176\u4ed6\u597d\u529e\u6cd5\u5417?</p>\n<p>\u73b0\u5728\u627e\u5230\u4e00\u4e2a arrow \u5e93\u53ef\u4ee5\u7528 option dsl \u5b9e\u73b0\u6bd4\u8f83\u6f02\u4eae\u7684\u5305\u88c5</p>\n<pre><code class=\"language-kotlin\">option {\n\tfoo(a.bind(), b.bind())\n}\n</code></pre>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/coderstory", 
        "name": "coderstory", 
        "avatar": "https://cdn.v2ex.com/avatar/3c9c/7f07/178817_large.png?m=1659344747"
      }, 
      "url": "https://www.v2ex.com/t/777439", 
      "title": "\u6c42\u89e3\u8fd9\u4e2a eval \u51fd\u6570\u8fd4\u56de\u503c\u4e3a\u4ec0\u4e48\u662f\u4e2a lambda\uff1f\u600e\u4e48\u624d\u80fd\u62ff\u5230\u503c\uff1f \u200b\u200b\u200b", 
      "id": "https://www.v2ex.com/t/777439", 
      "date_published": "2021-05-17T07:24:46+00:00", 
      "content_html": "<pre><code>   class Min {\n   override fun eval(variables: Map&lt;String, Any&gt;): Any = {\n        val values = parameters.map { it.eval(variables) }\n        min(values[0] as Double, values[1] as Double)\n    }\n   }\n</code></pre>\n<p>\u8fd9\u4e2a\u51fd\u6570\u554a\u5728 IDEA \u7684 evaluate \u4e2d\u6267\u884c \u8fd4\u56de\u4e86 Min$eval$1 \u7c7b\u7684\u5b9e\u4f8b ()-&gt; Kotlin.Double</p>\n<pre><code>   override fun eval(variables: Map&lt;String, Any&gt;): Any {\n        val values = parameters.map { it.eval(variables) }\n        return min(values[0] as Double, values[1] as Double)\n    }\n</code></pre>\n<p>\u6211\u628a\u5b83\u6539\u6210\u4e86\u666e\u901a\u7684 return \u51fd\u6570\u5c31\u6ca1\u8fd9\u4e2a\u95ee\u9898\u4e86 \u53ef\u4ee5\u8fd4\u56de\u5177\u4f53\u7684\u503c</p>\n<p>\u6c42\u89e3\u8fd9\u79cd\u76f4\u63a5\u7b49\u4e8e\u53f7\u8d4b\u503c\u7684\u64cd\u4f5c \u548c\u666e\u901a\u51fd\u6570\u4f7f\u7528 return \u7684\u64cd\u4f5c \u6709\u4ec0\u4e48\u533a\u522b</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/Leviathann", 
        "name": "Leviathann", 
        "avatar": "https://cdn.v2ex.com/gravatar/d3b22910a49ecf620ab67790d7f594eb?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/771382", 
      "title": "kotlin lazy \u5f62\u5f0f\u7684 grouping and mapping \u5e94\u8be5\u600e\u4e48\u5199\uff0c sequence \u91cc grouping + aggregate \u600e\u4e48\u6bd4 Java stream \u8fd8\u590d\u6742\u5f97\u591a", 
      "id": "https://www.v2ex.com/t/771382", 
      "date_published": "2021-04-17T19:04:21+00:00", 
      "content_html": "<p>\u662f\u4e0d\u662f\u6211\u59ff\u52bf\u4e0d\u5bf9\uff0c\u6709\u6ca1\u6709\u66f4\u597d\u7684\u5199\u6cd5\uff1f</p>\n<pre><code class=\"language-kotlin\">val kotlin = \"ABCDEF\".asSequence()\n    .groupingBy {\n        println(\"grouping\")\n        it.toInt() / 10\n    }\n    .aggregate { _, accumulator: MutableList&lt;String&gt;?, element, first -&gt;\n        println(\"aggregate\")\n        if (first) {\n            val tmp = MutableList(0) { \"\" }\n            tmp.add(element.toString() + \"X\")\n            tmp\n        } else {\n            accumulator!!.add(element.toString() + \"X\")\n            accumulator\n        }\n    }\nprintln(kotlin)\n\n\nval java = \"ABCDEF\".toList().stream()\n    .collect(\n        Collectors.groupingBy(\n            { println(\"java grouping\"); it.toInt() / 10 },\n            Collectors.mapping({ println(\"java mapping\"); it.toString() + \"X\" }, Collectors.toList())\n        )\n    )\nprintln(java)\n\n\n</code></pre>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/Trinity888", 
        "name": "Trinity888", 
        "avatar": "https://cdn.v2ex.com/avatar/6df3/fb2c/248849_large.png?m=1696906163"
      }, 
      "url": "https://www.v2ex.com/t/768559", 
      "title": "\u5f3a\u5927\u7684 v2ex\uff0c\u5927\u5bb6\u64c5\u957f Kotlin\uff0c webview \u4ea4\u4e92\u7684\u4f19\u4f34\uff0c\u6765\u4e00\u6ce2", 
      "id": "https://www.v2ex.com/t/768559", 
      "date_published": "2021-04-07T00:54:06+00:00", 
      "content_html": "\u4e00\u4e2a\u5b89\u5353\u9879\u76ee\uff0c\u53ea\u5f00\u53d1\u524d\u7aef\uff0c\u9884\u7b97\u53ef\u8c08\uff0c\u505a\u8fc7 Tcp Server \u7684\u4f18\u5148"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/Leviathann", 
        "name": "Leviathann", 
        "avatar": "https://cdn.v2ex.com/gravatar/d3b22910a49ecf620ab67790d7f594eb?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/768535", 
      "title": "springboot kotlin \u548c Java \u6df7\u7f16\uff0c json \u5e8f\u5217\u5316\u7528\u54ea\u4e2a\u6bd4\u8f83\u597d", 
      "id": "https://www.v2ex.com/t/768535", 
      "date_published": "2021-04-06T17:28:57+00:00", 
      "content_html": "\u6253\u7b97\u91cd\u6784\u9879\u76ee\u7684\u540e\u7aef\u5e76\u9010\u6b65\u8fc1\u79fb\u5230 kotlin<br />\u5b98\u65b9\u7684 kotlinx.serialization \u6709\u5751\u5417"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/naoh1000", 
        "name": "naoh1000", 
        "avatar": "https://cdn.v2ex.com/avatar/de4b/a584/507085_large.png?m=1610340340"
      }, 
      "url": "https://www.v2ex.com/t/762949", 
      "date_modified": "2021-03-18T11:17:49+00:00", 
      "content_html": "\u4ee5\u524d\u8bd5\u8fc7\u7528 React Native \u8fd9\u79cd JS \u591a\u7aef\u6846\u67b6\u5f00\u53d1\u5e94\u7528\uff0c\u53d1\u73b0\u8fd0\u884c\u6709\u4e9b\u5361\u987f\u4e14\u4e0d\u6613\u52a0\u5165\u81ea\u7136\u7684\u8fc7\u6e21\u52a8\u753b\uff0c\u636e\u8bf4 App Store \u57fa\u672c\u4e0d\u63a8\u8350\u8fd9\u6837\u7684\u5e94\u7528\uff0c\u60f3\u77e5\u9053 Kotlin \u4f5c iOS \u5f00\u53d1\u662f\u4e0d\u662f\u5dee\u4e0d\u591a\u7684\u60c5\u51b5\u3002", 
      "date_published": "2021-03-18T11:13:56+00:00", 
      "title": "\u6709\u54ea\u4e9b\u77e5\u540d iOS \u5e94\u7528\u662f\u7eaf Kotlin \u5f00\u53d1\u7684\uff1f", 
      "id": "https://www.v2ex.com/t/762949"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/yazinnnn", 
        "name": "yazinnnn", 
        "avatar": "https://cdn.v2ex.com/gravatar/a524fa152f42c833f1e93100e07a12af?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/726873", 
      "title": "[\u534f\u7a0b\u9012\u5f52\u95ee\u9898\u8bf7\u6559]", 
      "id": "https://www.v2ex.com/t/726873", 
      "date_published": "2020-11-18T13:43:07+00:00", 
      "content_html": "<p>\u62ff\u5b9e\u9645\u4e1a\u52a1\u8bf4\n\u4ee5\u9489\u9489\u63a5\u53e3\u4e2d\u7684\u8ddf\u90e8\u95e8 id  [ 1 ] \u4e3a\u5f00\u59cb\uff0c\u9012\u5f52\u51fa\u516c\u53f8\u8be6\u7ec6\u7684\u7ec4\u7ec7\u67b6\u6784</p>\n<pre><code class=\"language-kotlin\">\nsuspend fun getDepart(){\n\tfun getSubDepart(pid):List&lt;Department&gt;{\n\t\tval subList:List&lt;departId&gt; = dingApi.getSubDepartList(pid)\n\t\treturn subList.map{\n\t\t\tDepartment(it,getSubDepart(it))\n\t\t}\n\t}\n\treturn Department(1,getSubDepart(1))\n}\n\ndata class Department(val departId,val subList:List&lt;Department&gt;) //sublist \u662f\u4e0b\u5c5e\u90e8\u95e8\u5217\u8868 \n\n\n</code></pre>\n<p>\u4e1a\u52a1\u5927\u6982\u5982\u6b64\u63cf\u8ff0\uff0c\u540c\u6b65\u72b6\u6001\u4e0b\u5f88\u7b80\u5355\uff0c\u8bf7\u95ee\u534f\u7a0b\u8981\u600e\u4e48\u5b9e\u73b0\u5462\uff1f</p>\n<p>\u6211\u7528 withcontext \uff08\uff09\u5305\u88f9\u8ffd\u9489\u9489 api\uff0c\u7ed3\u679c build \u65f6\u65e0\u6cd5\u901a\u8fc7\uff0c\u62a5\ncall to 'resume' before 'invoke' with coroutine</p>\n<p>\u8bf7\u95ee\u6709\u5927\u4f6c\u80fd\u5e2e\u52a9\u4e00\u4e0b\u5417\uff1f</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/ghz666", 
        "name": "ghz666", 
        "avatar": "https://cdn.v2ex.com/gravatar/d83999ae66c46f459adbb39a5e5e20d2?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/715050", 
      "title": "kotlin \u6253\u5305\u95ee\u9898", 
      "id": "https://www.v2ex.com/t/715050", 
      "date_published": "2020-10-14T17:17:56+00:00", 
      "content_html": "<p>kotlin \u840c\u65b0\u4e00\u679a\uff0c\u6700\u8fd1\u5728\u7528 mirai \u505a qq \u673a\u5668\u4eba\uff0c\u78b0\u4e0a\u4e00\u4e2a\u6253\u5305\u7684\u95ee\u9898\u3002\u524d\u8fb9\u52a0\u4e0a susbend \u4e4b\u540e\u5c31\u4e0d\u80fd\u6253\u5305\u4e86\u3002\u3002\u3002\u3002\u53bb\u6389\u4e4b\u540e\u5c31\u53c8\u80fd\u4e86\u3002\u6709\u6ca1\u6709\u5927\u4f6c\u77e5\u9053\u548b\u56de\u4e8b\uff1f\n\u622a\u56fe\uff1a</p>\n<hr/>\n<img src=\"https://s1.ax1x.com/2020/10/15/0Izae1.png\"/>\n<img src=\"https://s1.ax1x.com/2020/10/15/0IzBFK.png\"/>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/darksheep9527", 
        "name": "darksheep9527", 
        "avatar": "https://cdn.v2ex.com/avatar/c5b8/6b23/503523_large.png?m=1756104454"
      }, 
      "url": "https://www.v2ex.com/t/712514", 
      "title": "\u6c42\u63a8\u8350 kotlin \u5b89\u5353\u5f00\u53d1\u6559\u7a0b", 
      "id": "https://www.v2ex.com/t/712514", 
      "date_published": "2020-10-04T10:44:08+00:00", 
      "content_html": "<h2>\u6c42\u52a9\u6b63\u6587</h2>\n<p>\u697c\u4e3b\u662f\u4e00\u679a\u83dc\u9e21\u5927\u5b66\u751f\uff0c\u5b89\u5353\u5f00\u53d1\u7684\u8001\u5e08\u51b3\u5b9a\u4ece\u8fd9\u5b66\u671f\u5f00\u59cb\u7528 kotlin \u6559\u5b89\u5353\u5f00\u53d1\n\u697c\u4e3b\u5b89\u5353\u5f00\u53d1\u548c kotlin \u90fd\u6ca1\u63a5\u89e6\u8fc7\uff0c\u6240\u4ee5\u60f3\u81ea\u5df1\u627e\u4e00\u4efd\u6559\u7a0b\u8bfe\u5916\u5b66\u4e60\uff0c\u6c42\u6709\u4e86\u89e3\u7684\u5927\u4f6c\u4ecb\u7ecd\u4e00\u4efd\u6bd4\u8f83\u65b0\u7684</p>\n<blockquote>\n<p>\u56e0\u4e3a\u88ab\u4e00\u672c\u8001\u4e66\u6298\u817e\u4e86\u597d\u4e45</p>\n</blockquote>\n<h2>\u83dc\u9e21\u5410\u69fd</h2>\n<p>\u641c\u5230\u4e86\u5f88\u591a\u4eba\u5b89\u5229\u7684 Kotlin\tfor\tandroid\tdevelopers \u7684\u4e2d\u6587\u7248\n\u7136\u540e\u53d1\u73b0\u7248\u672c\u592a\u8001\u4e86\uff0c\u91cc\u9762\u7528\u7684 anko \u5e93\u73b0\u5728\u5df2\u7ecf\u5e9f\u5f03\u4e86\u4f46\u662f\u4e5f\u8fd8\u80fd\u7528\nRecyclerView \u5e93\u5df2\u7ecf\u4ece 7 \u53d8\u6210\u4e86\u5b89\u5353 x</p>\n<pre><code class=\"language-kotlin\">val\tforecastList=findViewById(R.id.forecast_list) as RecyclerView\n</code></pre>\n<blockquote>\n<p>\u6539\u7528 x \u4e4b\u540e\uff0cfindviewbyid \u53c8\u62a5\u9519</p>\n</blockquote>\n<blockquote>\n<p>Inspection info: This inspection reports findviewByld calls with type casts which can be converted to findViewByld with a type parameter from Android 8.0(API level 26)</p>\n</blockquote>\n<p><img alt=\"image-20201004183420429\" src=\"https://sheepnote.oss-cn-shenzhen.aliyuncs.com/test/image-20201004183420429.png\"/></p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/300", 
        "name": "300", 
        "avatar": "https://cdn.v2ex.com/avatar/55fe/29e6/116124_large.png?m=1720510511"
      }, 
      "url": "https://www.v2ex.com/t/699161", 
      "title": "Kotlin 1.4 Released", 
      "id": "https://www.v2ex.com/t/699161", 
      "date_published": "2020-08-18T01:24:30+00:00", 
      "content_html": "<p><a href=\"https://blog.jetbrains.com/zh-hans/kotlin/2020/08/kotlin-1-4-released-with-a-focus-on-quality-and-performance-zh/\" rel=\"nofollow\">https://blog.jetbrains.com/zh-hans/kotlin/2020/08/kotlin-1-4-released-with-a-focus-on-quality-and-performance-zh/</a></p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/yazinnnn", 
        "name": "yazinnnn", 
        "avatar": "https://cdn.v2ex.com/gravatar/a524fa152f42c833f1e93100e07a12af?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/696198", 
      "title": "\u8bf7\u6559\u4e00\u4e0b kotlin json \u5e8f\u5217\u5316\u53ca\u914d\u5408 data class \u7684\u6b63\u786e\u59ff\u52bf", 
      "id": "https://www.v2ex.com/t/696198", 
      "date_published": "2020-08-06T08:21:15+00:00", 
      "content_html": "<p>jackson \u53ef\u4ee5\u76f4\u63a5 decode jsonString \u6210 Any \u9700\u8981\u81ea\u5df1\u5f3a\u8f6c\u6210 jsonObject \u6216\u8005 jsonArray\n\u53ef\u4ee5\u8f6c\u6210\u666e\u901a class \u5b9e\u4f53\uff0c\u4e0d\u80fd\u8f6c\u6210 data class</p>\n<p>Fastjson \u60c5\u51b5\u7c7b\u4f3c</p>\n<p>\u7f51\u4e0a\u641c\u4e86\u4e00\u4e0b jackson \u9700\u8981\u5f15\u5165 kotlin module \u548c\u5927\u91cf\u6ce8\u89e3\u914d\u5408\u624d\u80fd\u4f7f\u7528 data class</p>\n<p>\u8bf7\u95ee\u6709\u5565\u65b9\u4fbf\u7684\u8f6e\u5b50\u53ef\u4ee5\u7528\u4e48\uff1f</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/lululau", 
        "name": "lululau", 
        "avatar": "https://cdn.v2ex.com/avatar/1352/d2eb/15170_large.png?m=1751341400"
      }, 
      "url": "https://www.v2ex.com/t/691633", 
      "title": "\u5404\u4f4d\u516c\u53f8\u9879\u76ee\u540e\u7aef\u6709\u7528 Kotlin + Spring \u7684\u5417\uff0c DB \u5c42\u6846\u67b6\u9009\u7528\u7684\u4ec0\u4e48\uff1f", 
      "id": "https://www.v2ex.com/t/691633", 
      "date_published": "2020-07-20T08:41:14+00:00", 
      "content_html": "<p>JPA? Hibernate? MyBatis? Exposed?</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/iseki", 
        "name": "iseki", 
        "avatar": "https://cdn.v2ex.com/gravatar/721d70c80ade836659693895ef66bbff?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/689648", 
      "title": "\u614c\u7684\u4e00\u6279\uff0c Kotlin \u8fd9\u4e48\u4f18\u96c5\u7684\u8bed\u8a00\u4e3a\u4ec0\u4e48\u4e0d\u706b\u5462", 
      "id": "https://www.v2ex.com/t/689648", 
      "date_published": "2020-07-13T09:10:17+00:00", 
      "content_html": "<p>\u771f\u662f\uff0c\u4e24\u5e74\u6ca1\u5199 Java \u4e86\uff0c\u4e4b\u524d\u5199\u4e86\u4e24\u793c\u62dc Java \u6ca1\u7ed9\u6211\u6025\u6b7b\uff0c\u624b\u901f\u8fdc\u8fdc\u8ddf\u4e0d\u4e0a\u8111\u5b50\u7684\u901f\u5ea6\u3002\u3002\u3002\n\u4f46\u662f\u770b\u770b\u793e\u533a\uff0c\u6709\u4e00\u79cd\u4e0d\u6e29\u4e0d\u706b\u7684\u611f\u89c9\u5462\uff0c\u614c\u00b7\u00b7\u00b7\u00b7\u00b7\u00b7</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/fanck0605", 
        "name": "fanck0605", 
        "avatar": "https://cdn.v2ex.com/gravatar/3f57b83dedfeefe03c7bd9ab0c0623ba?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/688067", 
      "date_modified": "2020-07-07T15:55:44+00:00", 
      "content_html": "<p>\u5728 java \u91cc\uff0c\u6211\u4e00\u822c\u7528\u53cd\u5c04\u904d\u5386\u6240\u6709 Field\uff0c\u5e76\u67e5\u770b\u662f\u5426\u4e3a null</p>\n<pre><code>Example example = new Example();\n\n// \u8fd9\u91cc\u89e3\u6790\u4e00\u4e9b\u6587\u672c\u5e76\u7ed9 example \u7684\u6210\u5458\u53d8\u91cf\u8d4b\u503c\n// do something...\n\n// \u68c0\u6d4b\u662f\u5426\u6240\u6709\u53d8\u91cf\u90fd\u88ab\u521d\u59cb\u5316\nField[] fields = Example.class.getFields()\nfor (Field field : fields) {\n    try {\n    \tObject o = field.get(example);\n        if (o == null) {\n            throw new Exception()\uff1b\n        }\n    } catch (IllegalAccessException ignored) {\n    }\n}\n</code></pre>\n<p>kotlin \u4ee3\u7801\u4e2d\uff0c\u6240\u6709\u6210\u5458\u53d8\u91cf\u90fd\u7528\u4e86 lateinit \u4fee\u9970\u7b26\uff0c\n\u90a3\u6709\u6ca1\u6709\u7c7b\u4f3c\u7684\u65b9\u6cd5\u53ef\u4ee5\uff0c\u68c0\u6d4b\u6240\u6709\u53d8\u91cf\u662f\u5426\u88ab initialized</p>\n", 
      "date_published": "2020-07-07T15:49:06+00:00", 
      "title": "Kotlin \u5982\u4f55\u68c0\u6d4b\u6240\u6709 lateinit \u7684 field \u662f\u5426\u521d\u59cb\u5316", 
      "id": "https://www.v2ex.com/t/688067"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/q13859601", 
        "name": "q13859601", 
        "avatar": "https://cdn.v2ex.com/gravatar/15d97f9fd5fdd18eaf4ca172fe475c9e?s=73&d=retro"
      }, 
      "url": "https://www.v2ex.com/t/683450", 
      "title": "\u521d\u5165 kotlin\uff0c\u6e90\u7801\u627e\u4e0d\u89c1\u6c42\u6559", 
      "id": "https://www.v2ex.com/t/683450", 
      "date_published": "2020-06-21T03:56:34+00:00", 
      "content_html": "<pre><code class=\"language-java\">fun main() {\n    val numbersMap = mutableMapOf(\"one\" to 1, \"two\" to 2, \"three\" to 3, \"threeAgain\" to 3)\n    numbersMap.keys.remove(\"one\")\n    println(numbersMap)\n    numbersMap.values -= 3\n    println(numbersMap)\n    numbersMap.values.remove(3)\n    println(numbersMap)\n}\n</code></pre>\n<p>\u5bf9\u4e8e<code>numbersMap.values -= 3</code> \u8fd9\u4e2a<code>-=</code>\u7684\u8fd0\u7b97\u7b26\u91cd\u8f7d\u7684\u6e90\u7801\u5728\u54ea\u91cc\u5462\uff0c\u96be\u9053\u662f native \u4e48\nide \u91cc\u9762\u70b9\u4e86\u534a\u5929\u90fd\u662f MutableCollection \u7684 minusAssign \u65b9\u6cd5\uff0c\u4f46\u662f\u5e76\u4e0d\u6e05\u695a\u8fd9\u4e2a\u5185\u90e8\u7684 values:MutableCollection \u7684-=\u7684\u91cd\u5199\u5982\u4f55\u5173\u8054\u5230 map \u7684 entry \u7684\u5220\u9664\u7684</p>\n<p>\u6c42\u5927\u795e\u6307\u5bfc:D</p>\n"
    }, 
    {
      "author": {
        "url": "https://www.v2ex.com/member/honglei92", 
        "name": "honglei92", 
        "avatar": "https://cdn.v2ex.com/avatar/d5a8/ef82/406489_large.png?m=1581494448"
      }, 
      "url": "https://www.v2ex.com/t/673809", 
      "title": "libcore.reflect.parameterizedtypeimpl cannot be cast to Java .lang.clas \u8fd9\u4e2a\u9519\u8bef \u6211\u771f\u662f\u83ab\u540d\u5176\u5999", 
      "id": "https://www.v2ex.com/t/673809", 
      "date_published": "2020-05-20T15:40:22+00:00", 
      "content_html": "<p>1java \u65b9\u6cd5\npublic void getUploadConfig(String uploadJson, final RxResultCallback&lt;TMResponse&gt; callBack)</p>\n<p>2TMRespnse \u7c7b \u662f\u6cdb\u578b\u7c7b    public class TMResponse&lt;T&gt;</p>\n<p>3 \u5728 kotlin \u4e2d\u4f7f\u7528   getUploadConfig(\"111\", object : RxResultCallback&lt;TMResponse&lt;Any&gt;&gt;()</p>\n<p>\u5c31\u62a5 \u4e0a\u9762\u7684\u9519\uff0cobject : RxResultCallback&lt;TMResponse&lt;Any&gt;&gt;()  \u8fd9\u91cc\u5e94\u8be5\u600e\u4e48\u5199 \u5462\uff1f</p>\n"
    }
  ]
}