Learning Functional Programming in Go

The decorator/simple_log.go file

Our logger leverages Go's Logger package, as follows:

package decoratorimport (       "io"       "log"       "os")var (       Debug   *log.Logger       Info    *log.Logger       Error   *log.Logger       InfoHandler io.Writer)

A simple logger exports one function, namely InitLog, which the calling package uses to enable the logging features:

func InitLog(       traceFileName string,       debugHandler io.Writer,       infoHandler io.Writer,       errorHandler io.Writer,) {