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46 lines
1.0 KiB
Markdown
46 lines
1.0 KiB
Markdown
---
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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 パターン
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> このファイルは [common/patterns.md](../common/patterns.md) を Go 固有のコンテンツで拡張します。
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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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## 小さなインターフェース
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インターフェースは実装される場所ではなく、使用される場所で定義する。
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## 依存性注入
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コンストラクタ関数を使用して依存関係を注入する:
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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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## リファレンス
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スキル: `golang-patterns` で並行処理、エラーハンドリング、パッケージ構成を含む包括的な Go パターンを参照してください。
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