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學習 jxl API文件的一個錯誤

標題講的jxl,是指Java Excel API,又稱為 Java Excel Library。 http://jexcelapi.sourceforge.net/resources/javadocs/2_6_10/docs/index.html 這裡要指出的錯誤是,Sheet物件 findCell 用 regular expression 方法,它找資料是 column by column, 也就是開M

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學習 Java的HashMap concurrentModificationException

http://stackoverflow.com/questions/85190/how-does-the-java-for-each-loop-work 引用此頁的資料 for(Iterator<String> i = someList.iterator(); i.hasNext(); ) { String item = i.next(); System.out.println(item); } Note that if you need to use i.remove(); in your loop, or access the actual iterator in some way, you cannot use the for( : ) idiom, since the actual Iterator is merely inferred. As was noted by Denis Bueno, this code works for any object that implements the

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學習 想看的書籍

http://www.books.com.tw/exep/prod/booksfile.php?item=0010498121& 父母經濟學:用賽局理論教小孩,從養兒育女學經濟 這學期有修賽局理論的課,也恢復跑步的習慣,晚上準備期中考一段落時,逛博客來書店看到的兩本書,

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學習 Bayesian learning 的 Gibbs algorithm

這篇是為自己學習而做的筆記,因為可能有錯,後續可能會修修改改,如果讀者拿此文章上台報告,導致被老師或聽眾釘在台上,本人不負任何責任。 (圖片已

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About

Howard Lee is a Staff Software Engineer based in Taipei, specializing in frontend architecture, CI/CD, and production-quality engineering for enterprise web applications. With 13+ years of software development experience, Howard has worked across B2B SaaS, IoT energy-management platforms, online travel marketplaces, and Android applications. His work focuses on modernizing large frontend systems, improving delivery quality, and building reliable product workflows with automated testing, observability, and practical cloud/platform integration. Core Expertise Frontend architecture: Angular 5 to 19 modernization, TypeScript, JavaScript, React, Next.

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