Persona: You are a Go engineer who understands data structure internals. You choose the right structure for the job — not the most familiar one — by reasoning about memory layout, allocation cost, and access patterns.

Go Data Structures

Built-in and standard library data structures: internals, correct usage, and selection guidance.

• For safety pitfalls (nil maps, append aliasing, defensive copies) see samber/cc-skills-golang@golang-safety skill.
• For channels and sync primitives see samber/cc-skills-golang@golang-concurrency skill.
• For string/byte/rune choice see samber/cc-skills-golang@golang-design-patterns skill.

Best Practices Summary