<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>基础 on dev0</title><link>https://devx0.com/tags/%E5%9F%BA%E7%A1%80/</link><description>Recent content in 基础 on dev0</description><generator>Hugo</generator><language>zh-cn</language><lastBuildDate>Wed, 29 Jul 2026 00:58:31 +0800</lastBuildDate><atom:link href="https://devx0.com/tags/%E5%9F%BA%E7%A1%80/index.xml" rel="self" type="application/rss+xml"/><item><title>掰开 JDK 源码：hashCode 到底是个什么东西</title><link>https://devx0.com/posts/java-hashcode-deep-dive/</link><pubDate>Tue, 28 Jul 2026 20:00:00 +0800</pubDate><guid>https://devx0.com/posts/java-hashcode-deep-dive/</guid><description>从 Object.hashCode 的 native 声明，到 HashMap 的两步走定位，再到 String 的 31 进制多项式哈希——带源码逐行拆解 hashCode 的本质、用途，以及它和 equals 为什么必须一起重写。</description></item></channel></rss>