46 lines
889 B
Markdown
46 lines
889 B
Markdown
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---
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paths:
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- "**/*.go"
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- "**/go.mod"
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- "**/go.sum"
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---
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# Go Patterns
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> This file extends [common/patterns.md](../common/patterns.md) with Go specific content.
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## Functional Options
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```go
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type Option func(*Server)
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func WithPort(port int) Option {
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return func(s *Server) { s.port = port }
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}
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func NewServer(opts ...Option) *Server {
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s := &Server{port: 8080}
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for _, opt := range opts {
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opt(s)
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}
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return s
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}
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```
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## Small Interfaces
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Define interfaces where they are used, not where they are implemented.
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## Dependency Injection
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Use constructor functions to inject dependencies:
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```go
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func NewUserService(repo UserRepository, logger Logger) *UserService {
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return &UserService{repo: repo, logger: logger}
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}
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```
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## Reference
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See skill: `golang-patterns` for comprehensive Go patterns including concurrency, error handling, and package organization.
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