golang-data-structures
golang data structures
What it does
- < 256 elements: capacity doubles
- > = 256 elements: grows by ~25% (newcap += (newcap + 3256) / 4)
- Each growth copies the entire backing array — O(n)
- emirpasic/gods — comprehensive collection library (trees, sets, lists, stacks, maps, queues)
- deckarep/golang-set — thread-safe and non-thread-safe set implementations
- gammazero/deque — fast double-ended queue
- → See samber/cc-skills-golang@golang-performance skill for struct field alignment, memory layout optimization, and cache locality
Requirements & configuration
- Use strings.Builder for pure string concatenation (avoids copy on String()), bytes.Buffer when you need io.Reader or byte manipulation. Both support Grow(n). Details and comparison
- | interface | Value copied (type + value pair) | Depends on held type |
Derived from the skill's own SKILL.md documentation · extracted 2026-07-23
golang-data-structures FAQ
What does the golang-data-structures skill do?
Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. < 256 elements: capacity doubles > = 256 elements: grows by ~25% (newcap += (newcap + 3256) / 4)
What does golang-data-structures require?
Use strings.Builder for pure string concatenation (avoids copy on String()), bytes.Buffer when you need io.Reader or byte manipulation. Both support Grow(n). Details and comparison | interface | Value copied (type + value pair) | Depends on held type |
How do I install golang-data-structures?
Run: npx -y skills add https://github.com/samber/cc-skills-golang --skill golang-data-structures --agent claude-code — the source lives at github.com/samber/cc-skills-golang.
Maintain golang-data-structures?
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[](https://getagentictools.com/skills/samber-cc-skills-golang-golang-data-structures?ref=badge) npx agentictools info skills/samber-cc-skills-golang-golang-data-structures The second line is the CLI lookup for this page — handy in READMEs and docs.
