Interface Singleton

singleton/singleton.go:21–24

Interface for accessing singleton objects. Example use: var configSelectorSingleton = NewSingleton(init) func configSelector() (configSelector, error) { s, err := configSelectorSingleton.Get() if err != nil { return nil, err } return s.(configSelector), nil }

//     return s.(configSelector), nil
// }
type Singleton interface {
	// Return the encapsulated singleton
	Get() (interface{}, error)
}

// Call to create a new singleton that is instantiated with the given init function.
// init is not called until the first invocation of Get().  If init errors, it will be called again