2025年4月7日，Álvaro Herrera 提交补丁，允许以 NOT VALID 形式添加 NOT NULL 约束，避免了长时间的独占锁定。ALTER TABLE 语句支持此功能，验证时只需轻微锁定，从而提高数据库操作效率。

UX团队希望创建一个导航菜单，当鼠标悬停时，其他项目变暗。通过使用CSS的not()伪类实现，设置透明度动画过渡，降低非悬停元素的透明度，并通过visibility属性确保效果正常。

位运算符用于处理长整型、整型、短整型、字符和字节等类型，主要用于测试、设置或移动单个比特，尤其在系统编程中用于设备状态的比特操作。主要运算符包括AND、OR、XOR和位移等，逐位操作与布尔逻辑运算不同。

One of the surprises that comes with developing applications and operating a database cluster behind them is the discrepancy between practice and theory, development environment and the...

这段文本描述了在将一个C库绑定到Rust时出现的警告，警告指出u128类型的整数不符合FFI安全性要求。作者不知道如何修复该问题。作者在GitHub的issue中找到了一些关于blocklist的资料，但由于英文水平有限，无法理解具体情况。

Did you ever wonder why VACUUM does not make your PostgreSQL tables smaller? Did you ever wonder why VACUUM does not shrink data files? Well, maybe this is the article you have been looking for....

import sys reload(sys) sys.setdefaultencoding('utf […] The post 解决UnicodeDecodeError: ‘ascii’ codec can’t decode byte 0xe5 in position 108: ordinal not in range(128) appeared first on 无主题博客.

JS 代码在 Safari, Chrome, Firefox 都是好的，就只有 Edge 莫名其妙地报错。 1SCRIPT5022: Exception thrown and not caught 未捕获的异常？EXM？你倒是说是什么异常啊？行号还是错的？点过去无法定位错误位置？hash-navigation.js？我的项目里根本都没有这个 js 啊喂！

Sparkify is a digital music service similar to Netease Cloud Music or QQ Music. Many of the users stream their favorite songs in Sparkify service everyday, either using free tier that places...

There are some “coincidence” in the Chinese Blogger Conference in Hangzhou. The conference was originally planned to be at a place called Zijingang. One and half day before the conference, the...