“Was this the port or the timeout?” 🤯
One wrong parameter order and prod is on fire.
In Go, the functional options pattern solves it cleanly:
✅ Safe defaults
✅ Declarative config (WithFoo, WithBar…)
✅ Extensible without breaking existing code
I show 3 real-world examples:
- File uploader with sane defaults
- Colorful progress bar
- Lightweight DB client
Plus: pros, caveats, and why this pattern feels like named parameters — Go style.
👉 Full article: Clean Configuration without Pain: Go Functional Options 2025 https://blog.devgenius.io/clean-configuration-without-pain-go-functional-options-2025-6ec56e204f5a
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