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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. ...

January 8, 2026 · 11 min ·  rkttu
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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. ...

December 5, 2025 · 3 min ·  rkttu