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<rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" version="2.0"><channel><title>Null 猫 Blog</title><link>https://xn--7n0au20b.xioo.me/</link><atom:link href="https://xn--7n0au20b.xioo.me/rss.xml" rel="self" type="application/rss+xml"/><description>Null 猫 Blog</description><generator>Halo v2.26.0</generator><language>zh-cn</language><image><url>https://xn--7n0au20b.xioo.me/upload/16155-OjaC.jpg</url><title>Null 猫 Blog</title><link>https://xn--7n0au20b.xioo.me/</link></image><lastBuildDate>Mon, 24 Aug 2026 14:27:05 GMT</lastBuildDate><item><title><![CDATA[第5篇：空安全 —— 和 NullPointerException 说再见]]></title><link>https://xn--7n0au20b.xioo.me/archives/di-5pian-kong-an-quan-he-nullpointerexception-shuo-zai-jian</link><description><![CDATA[<img src="https://xn--7n0au20b.xioo.me/plugins/feed/assets/telemetry.gif?title=%E7%AC%AC5%E7%AF%87%EF%BC%9A%E7%A9%BA%E5%AE%89%E5%85%A8%20%E2%80%94%E2%80%94%20%E5%92%8C%20NullPointerException%20%E8%AF%B4%E5%86%8D%E8%A7%81&amp;url=/archives/di-5pian-kong-an-quan-he-nullpointerexception-shuo-zai-jian" width="1" height="1" alt="" style="opacity:0;">可空类型、安全调用、Elvis运算符、非空断言--Kotlin如何在编译期消灭空指针。]]></description><guid isPermaLink="false">/archives/di-5pian-kong-an-quan-he-nullpointerexception-shuo-zai-jian</guid><dc:creator>雫之绒野</dc:creator><enclosure url="https://xn--7n0au20b.xioo.me/apis/api.storage.halo.run/v1alpha1/thumbnails/-/via-uri?uri=%2Fupload%2FKotlin-rm.png&amp;size=m" type="image/jpeg" length="0"/><category>Kotlin 入门系列</category><pubDate>Wed, 6 May 2026 15:08:00 GMT</pubDate></item><item><title><![CDATA[第4篇：Kotlin 的函数，不只是少打几个字]]></title><link>https://xn--7n0au20b.xioo.me/archives/di-4pian-kotlin-de-han-shu-bu-zhi-shi-shao-da-ji-ge-zi</link><description><![CDATA[<img src="https://xn--7n0au20b.xioo.me/plugins/feed/assets/telemetry.gif?title=%E7%AC%AC4%E7%AF%87%EF%BC%9AKotlin%20%E7%9A%84%E5%87%BD%E6%95%B0%EF%BC%8C%E4%B8%8D%E5%8F%AA%E6%98%AF%E5%B0%91%E6%89%93%E5%87%A0%E4%B8%AA%E5%AD%97&amp;url=/archives/di-4pian-kotlin-de-han-shu-bu-zhi-shi-shao-da-ji-ge-zi" width="1" height="1" alt="" style="opacity:0;">从单表达式函数到默认参数、命名参数、变长参数，感受Kotlin函数的简洁之美。]]></description><guid isPermaLink="false">/archives/di-4pian-kotlin-de-han-shu-bu-zhi-shi-shao-da-ji-ge-zi</guid><dc:creator>雫之绒野</dc:creator><enclosure url="https://xn--7n0au20b.xioo.me/apis/api.storage.halo.run/v1alpha1/thumbnails/-/via-uri?uri=%2Fupload%2FKotlin-rm.png&amp;size=m" type="image/jpeg" length="0"/><category>Kotlin 入门系列</category><pubDate>Wed, 29 Apr 2026 23:48:00 GMT</pubDate></item><item><title><![CDATA[第3篇：条件与循环]]></title><link>https://xn--7n0au20b.xioo.me/archives/di-3pian-tiao-jian-yu-xun-huan</link><description><![CDATA[<img src="https://xn--7n0au20b.xioo.me/plugins/feed/assets/telemetry.gif?title=%E7%AC%AC3%E7%AF%87%EF%BC%9A%E6%9D%A1%E4%BB%B6%E4%B8%8E%E5%BE%AA%E7%8E%AF&amp;url=/archives/di-3pian-tiao-jian-yu-xun-huan" width="1" height="1" alt="" style="opacity:0;">学习if表达式、when 多分支匹配、for区间遍历，掌握Kotlin的流程控制。]]></description><guid isPermaLink="false">/archives/di-3pian-tiao-jian-yu-xun-huan</guid><dc:creator>雫之绒野</dc:creator><enclosure url="https://xn--7n0au20b.xioo.me/apis/api.storage.halo.run/v1alpha1/thumbnails/-/via-uri?uri=%2Fupload%2FKotlin-rm.png&amp;size=m" type="image/jpeg" length="0"/><category>Kotlin 入门系列</category><pubDate>Thu, 23 Apr 2026 07:20:00 GMT</pubDate></item><item><title><![CDATA[第2篇：变量与数据类型]]></title><link>https://xn--7n0au20b.xioo.me/archives/di-2pian-bian-liang-yu-shu-ju-lei-xing</link><description><![CDATA[<img src="https://xn--7n0au20b.xioo.me/plugins/feed/assets/telemetry.gif?title=%E7%AC%AC2%E7%AF%87%EF%BC%9A%E5%8F%98%E9%87%8F%E4%B8%8E%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B&amp;url=/archives/di-2pian-bian-liang-yu-shu-ju-lei-xing" width="1" height="1" alt="" style="opacity:0;">搞懂val和 var的区别、类型推断、字符串模板和类型转换，打好Kotlin语法基础。]]></description><guid isPermaLink="false">/archives/di-2pian-bian-liang-yu-shu-ju-lei-xing</guid><dc:creator>雫之绒野</dc:creator><enclosure url="https://xn--7n0au20b.xioo.me/apis/api.storage.halo.run/v1alpha1/thumbnails/-/via-uri?uri=%2Fupload%2FKotlin-rm.png&amp;size=m" type="image/jpeg" length="0"/><category>Kotlin 入门系列</category><pubDate>Mon, 20 Apr 2026 07:12:00 GMT</pubDate></item><item><title><![CDATA[第1篇：Kotlin 是什么？为什么值得学？]]></title><link>https://xn--7n0au20b.xioo.me/archives/di-1pian-kotlin-shi-shi-me-wei-shi-me-zhi-de-xue</link><description><![CDATA[<img 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