golang-data-structures

Choosing the right Go data structure requires evaluating slices, maps, and standard containers for preallocation, growth, and access patterns. This Skill recommends the optimal structure by analyzing your specific use case and explaining the performance tradeoffs and idiomatic implementation details.

The difference between strings.Builder and bytes.Buffer lies in their memory allocation and copy behavior. This Skill helps you decide between them based on your need for string concatenation versus mutable byte manipulation, ensuring safe pointer semantics and performance optimization.

You should use container/heap or container/list instead of slices when your access patterns require priority queue operations or doubly linked list semantics. This Skill identifies when these standard containers fit better than slices to avoid memory waste and performance traps.

Designing type-safe generic data structures in Go involves using generics to enforce compile-time type safety and map key comparability. This Skill provides idiomatic implementation patterns for generic containers and explains how to handle pointer semantics and unsafe usage safely.

Your Go map causes memory waste due to unexpected growth and aliasing pitfalls when not preallocated correctly. This Skill enforces proper preallocation strategies and helps you reason about map growth, copy behavior, and value versus pointer strategies to optimize performance.

Using unsafe pointers with Go slices for optimization requires strict adherence to unsafe pointer rules to avoid breaking safety. This Skill guides you through handling pointer semantics, weak references, and unsafe usage correctly, ensuring your optimization design decisions do not compromise idiomatic correctness.