This code implements a simple logging package in Go that...

This code implements a simple logging package in Go that provides a Logger struct to log messages at different severity levels (debug, info, warn, and error). Here's what it does:

1. Defines a Logger struct:

   • The struct contains four fields: debug, info, warn, and error. Each field is a pointer to a log.Logger, which is part of Go's standard library for logging.

2. Creates a NewLogger factory function:

   • The NewLogger function initializes and returns a Logger instance.
   • It creates four log.Logger instances (debug, info, warn, error) that log messages to standard output (os.Stdout) with different severity prefixes ("DEBUG: ", "INFO: ", "WARN: ", "ERROR: ").
   • Each instance uses the log.LstdFlags flag, which automatically adds date and time information to log messages.

3. Implements four logging methods:

   • Debug(v ...interface{}): Logs debug-level messages with the prefix "DEBUG: ".
   • Info(v ...interface{}): Logs info-level messages with the prefix "INFO: ".
   • Warn(v ...interface{}): Logs warning-level messages with the prefix "WARN: ".
   • Error(v ...interface{}): Logs error-level messages with the prefix "ERROR: ".
   • These methods use the Println method of the corresponding log.Logger to write log messages.

Example Usage:

If you use this package to create a Logger instance and call its methods:

package main

import "logger"

func main() {
    log := logger.NewLogger()

    log.Debug("This is a debug message.")
    log.Info("This is an info message.")
    log.Warn("This is a warning message.")
    log.Error("This is an error message.")
}

The output (to standard output) would look something like this:

DEBUG: 2023/10/11 15:00:00 This is a debug message.
INFO: 2023/10/11 15:00:00 This is an info message.
WARN: 2023/10/11 15:00:00 This is a warning message.
ERROR: 2023/10/11 15:00:00 This is an error message.

Summary:

This code provides a flexible and simple logging utility that categorizes log messages by severity levels (DEBUG, INFO, WARN, ERROR) and prefixes them with timestamps for tracking events in an application.