5 Excuses Bad Programmers Make

本文探讨了团队中年轻成员常有的冲动,即未经充分考虑就急于采用复杂的技术方案来替换现有的简单有效系统。文章列举了五个常见的理由:安全性、性能、未来适应性、过时性和美观性,并对这些论点进行了批判性的分析。

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It’s a common problem, there’s a young kid on your team who thinks he is a great architect. He wants to replace the simplest include with a new whizbang inherited menu system or add 3 layers of abstraction to the database access layer, or replace the beautifully crafted error reporting system with exceptions. When quizzing this “architect” he has a reason for every possible change, these are those classic excuses and reason.

1. Security. “This will stop any possible security breaches in the future,” he says. Little does he realise that including one extra file into your system isn’t a security risk and probably never will be.
2. Performance. “We will do this and this and this, and then cache it all in memory. It will be faster than the existing system,” he says. Sure this might be faster, but the difference between 5ms execution and 8ms execution is irrelevant. Chances of him actually having done the profiling and being able to improve the performance gains are minimal.
3. Future proofing. “This will put us in a great position to make changes in the future.” Which changes? You know those unspecified, unrealised and unkown changes that we may or may make sometime in the future.
4. Outdated. “There’s a new better way to do that exact thing.” There is a new way to do it, there is a new way to do anything and everything, but is it better? Is it worth holding the project back a week to modernise the codebase? Probably not.
5. That’s ugly. “But this code is ugly”, he pleads. Is a 3 line hack better or worse than a leaky abstraction?

I’m sure you know of more, what are they?
资源下载链接为: https://pan.quark.cn/s/22ca96b7bd39 在 IT 领域,文档格式转换是常见需求,尤其在处理多种文件类型时。本文将聚焦于利用 Java 技术栈,尤其是 Apache POI 和 iTextPDF 库,实现 doc、xls(涵盖 Excel 2003 及 Excel 2007+)以及 txt、图片等格式文件向 PDF 的转换,并实现在线浏览功能。 先从 Apache POI 说起,它是一个强大的 Java 库,专注于处理 Microsoft Office 格式文件,比如 doc 和 xls。Apache POI 提供了 HSSF 和 XSSF 两个 API,其中 HSSF 用于读写老版本的 BIFF8 格式(Excel 97-2003),XSSF 则针对新的 XML 格式(Excel 2007+)。这两个 API 均具备读取和写入工作表、单元格、公式、样式等功能。读取 Excel 文件时,可通过创建 HSSFWorkbook 或 XSSFWorkbook 对象来打开相应格式的文件,进而遍历工作簿中的每个 Sheet,获取行和列数据。写入 Excel 文件时,创建新的 Workbook 对象,添加 Sheet、Row 和 Cell,即可构建新 Excel 文件。 再看 iTextPDF,它是一个用于生成和修改 PDF 文档的 Java 库,拥有丰富的 API。创建 PDF 文档时,借助 Document 对象,可定义页面尺寸、边距等属性来定制 PDF 外观。添加内容方面,可使用 Paragraph、List、Table 等元素将文本、列表和表格加入 PDF,图片可通过 Image 类加载插入。iTextPDF 支持多种字体和样式,可设置文本颜色、大小、样式等。此外,iTextPDF 的 TextRenderer 类能将 HTML、
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