go

name	go
description	Go: .go, go.mod, go.sum, goroutines, channels, interfaces, go test, go vet, or concurrency.

Go Skill

Go emphasizes simplicity, explicit error handling, and strong concurrency primitives. Prefer composition over inheritance, return errors instead of panicking, and keep packages small and focused.

Quick Reference

Command	Purpose
go build ./...	Build all packages
go test ./...	Run all tests
go test -race ./...	Run tests with race detector
go fmt ./...	Format all code
go vet ./...	Static analysis
go mod tidy	Clean up module dependencies
golangci-lint run	Comprehensive linting

Error handling pattern:

if err != nil {
    return fmt.Errorf("operation failed: %w", err)
}

Supply-chain guardrails

• Treat go install <module>@<version> as code execution from that module. Pin reviewed versions; do not use @latest in committed scripts, CI, Dockerfiles, or docs examples.
• Run go mod tidy, inspect go.mod/go.sum diffs, and run govulncheck ./... after dependency changes.

Contents

• core.md - Go modules, error handling, concurrency, naming conventions
• testing.md - Table-driven tests, benchmarks, fuzzing, race detection