aaaaf4c
package workflowpattern
import "fmt"
type TraceWriter interface {
Info(string, ...interface{})
}
type EmptyTraceWriter struct{}
func (*EmptyTraceWriter) Info(string, ...interface{}) {
}
type StdOutTraceWriter struct{}
func (*StdOutTraceWriter) Info(format string, args ...interface{}) {
fmt.Printf(format+"\n", args...)
}