I have code that has following structure:
// $GOPATH/experiments/interfaceexport/printer/printer.go
package printer
import "fmt"
type ResourcePrinter interface {
PrintSomething()
}
type JSONPrinter struct {
IsGeneric bool
}
func (printer *JSONPrinter) PrintSomething() {
fmt.Println("JSON")
}
// $GOPATH/experiments/interfaceexporter/printerretriever/printerretriever.go
package printer
import "experiments/interfaceexporter/printer"
func GetPrinter() printer.ResourcePrinter {
return &printer.JSONPrinter{IsGeneric: true}
}
// $GOPATH/experiments/interfaceexport/main.go
import "experiments/intefaceexport/printerretriever"
func main() {
printer := printerretriever.GetPrinter()
printer.PrintSomething() // "JSON"
// interfaceexport/main.go:13: printer.IsGeneric undefined (type printer.ResourcePrinter has no field or method IsGeneric)
if printer.IsGeneric {
printer.PrintSomething()
}
}
When I do go run main.go
I get following error:
interfaceexport/main.go:13: printer.IsGeneric undefined (type printer.ResourcePrinter has no field or method IsGeneric)
Why do I get above error even though IsGeneric
is exported?