What are bitwise flags in Go?

Powers of two consts, OR'd into one int for compact bool sets. Use iota for auto-bits.

Should I replace my Go config bools with bitmasks?

Only in hot paths or serialization wins. Structs fine elsewhere — don't micro-optimize.

Nope, ints can hold garbage. But idiomatic patterns prevent most woes.

📦 Open Source

Eight bools in your Go config? Pure drudgery. Bitmasks crush it with one int and bitwise wizardry.

theAIcatchup Apr 10, 2026 3 min read

Bitmasks pack multiple bools into one efficient int using bitwise ops. 𝕏
Use iota for bug-free flag powers of two; perfect for configs and permissions. 𝕏
Great for hot paths and Unix-style APIs, but stick to bool structs for simple code. 𝕏

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#Go Programming #Go bitmasks #Go config patterns #bitmasks #bitwise flags #bitwise flags Go #bitwise operators #iota constants #iota flags

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