/dev/write

Abstract image representing code porting from Java to .NET

Porting Java hwplib to .NET: An Open Source Journey with AI

It Started with Simple Curiosity “I wish I could handle HWP files directly in .NET…” I’m probably not the only .NET developer who has had this thought. HWP files are still widely used in Korea, especially in government agencies, but the .NET ecosystem lacked a proper open-source library to handle them. Previously, the only way to work with HWP files in .NET was to use the HWP ActiveX control’s COM type library that comes with Hangul (the word processor), limited to Windows. Unfortunately, even this support has been discontinued, leaving us with no options. ...

From Tables to Cards: Modernizing the TableCloth Catalog UI

Introduction If you’ve ever used internet banking in Korea, you’ll be familiar with the numerous security program installation requirements. While ActiveX has disappeared, countless security plugins that replaced it—AhnLab Safe Transaction, TouchEn nxKey, Veraport, and more—still demand installation on our PCs. The TableCloth project is an open-source tool that allows you to run these security programs in an isolated Windows Sandbox environment. The TableCloth Catalog serves as a database that organizes which security programs are required for each financial website. ...

TableCloth Project Catalog Builder Update

TableCloth Catalog Builder Modernized with .NET 10 and FBA

What is the TableCloth Project? TableCloth is an open-source project that helps users safely use security plugins required for Korean internet banking in a Windows Sandbox environment. It runs security programs required by various financial institution websites in an isolated environment, ensuring the safety of the host system. What is the Catalog Repository? The TableClothCatalog repository stores the list of security programs required for each financial institution site referenced by the TableCloth project. Security plugin information required by websites of banks, securities firms, and insurance companies is systematically organized here. The catalog builder tool processes this information into a format usable by the TableCloth app. ...

Don't Be Fooled by the Term 'AI Training'

When talking with colleagues who work on service development, I often notice a vague sense of burden regarding AI adoption. Digging into the root of that burden, it usually stems from misunderstandings caused by the term ‘Training’. “If I attach a model to my service, will it consume user data and learn in real-time to get smarter?” “Can we control that learning process? What if it learns something weird?” If you’ve had these concerns, you can rest easy for a moment. Today, I’ll clarify this misunderstanding in developer terms. ...

/dev/write: Running a Tech Blog with AI

The biggest challenge in running a tech blog is “how do I consistently write quality content?” Add multilingual support to the mix, and the workload doubles with translations. /dev/write was born from these struggles. By combining Hugo static site generator with GitHub Copilot, I built an environment where you can focus solely on writing. Why Another Blog System? Honestly, existing blog platforms are great. Medium, Dev.to, Hashnode—all excellent choices. But there were a few pain points. ...

Booting Ubuntu on Hyper-V Generation 2 VM in Windows 10/11 Pro

Getting Started Windows Pro includes Hyper-V by default. Without installing any additional virtualization software, you can create and manage virtual machines directly within the operating system. In this article, I’ll walk you through how to boot Ubuntu using a Hyper-V Generation 2 virtual machine. First, open PowerShell with administrator privileges and enter the following command to enable the Hyper-V feature: Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All Once the installation is complete, please reboot your system. ...