Swift Strategy Pattern: Swapping Algorithms with Protocols and Closures
Have you ever dealt with code where if-else branches kept multiplying for each payment method?
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Showing 15 recent articles.
[SOLID #2] SOLID Principles in Practice (Part 2): ISP · DIP and Why Dependency Injection Exists
In the previous article, we covered the first three letters of SOLID—SRP, OCP, and LSP. Today, we’ll wrap up the remaining two.
Read articleThe Principle of Least Astonishment: Why getUser Shouldn’t Send Email
Have you ever encountered a function like this during a code review?
Read articleNaver Blog AI Automation: How Far Is Possible, and Where Does It Violate the Rules?
These days, many more people are writing blog posts with AI tools such as ChatGPT and Claude. If you take it a step further, you may even start wondering, "Why not automate everything from generating the post to publishing it?"
Read article[MCP·Skill #1] What Is an MCP Server? From Connection Methods to Security Considerations
Using ChatGPT or Claude can leave you wanting more. The models are smart, but they cannot see your database or read your internal wiki.
Read articleUnderstanding the DRY Principle: Wrong Abstractions Are Worse Than Code Duplication
There’s one scene I come across remarkably often during code reviews.
Read articleComposition vs. Inheritance: What “Favor composition over inheritance” Really Means
If you study object-oriented programming, you will inevitably encounter this sentence: “Favor composition over inheritance.”
Read articleYAGNI in Summary: Why a Developer’s “We Might Use It Someday” Gets Expensive
“We might need it later. Should we build it in advance?”
Read articleSwift Singleton Pattern: Why shared Is Really Called an Antipattern
When developing with Swift, you encounter singletons created with a single line, static let shared, very often.
Read articleWhy Swift Was Created: Why Did Chris Lattner Abandon Objective-C?
Anyone starting iOS development has wondered at least once: "Why did Apple create Swift from scratch instead of sticking with the Objective-C it was already using?"
Read articleSwift Monostate Pattern: Could It Be an Alternative to the Singleton?
For anyone who has wondered whether using a Singleton really is okay
Read article[SOLID #1] SOLID in Five Letters: Understand It Instead of Memorizing It (SRP · OCP · LSP)
You have probably been asked at least once in an interview, “Could you explain the SOLID principles?”
Read articleObjective-C Memory Management History: From MRC to ARC
If you work on iOS development, there’s probably something you’ve wondered about at least once.
Read articleThe Law of Demeter: When Method Chaining Becomes Bad Code
During code reviews, you’ve probably received feedback like this at least once.
Read articleIf you could choose only one coding AI: the choice of a year-long daily user
One of the questions developers ask most often in communities these days is, "Which should I use, Claude Code or Codex?" I’ve paid for Claude for about a year and Codex for more than six months, using both every day, including the recently released Claude Fable 5 and GPT-5.6 Sol…
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