Add log

logging/logging.go

@@ -0,0 +1,42 @@
+package logging
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"log/slog"
+	"os"
+)
+
+func Logging() {
+	log.Println("Baby's first log!")
+
+	log.SetFlags(log.LstdFlags | log.Lmicroseconds)
+	log.Println("Log with microseconds!")
+
+	log.SetFlags(log.LstdFlags | log.Lshortfile)
+	log.Println("Now with filename!")
+
+	mlog := log.New(os.Stdout, "[mlog] ", log.LstdFlags|log.Lshortfile)
+	mlog.Println("My own logger!")
+
+	mlog.SetPrefix("[mlog with SetPrefix] ")
+	mlog.Println("Changed prefix")
+
+	var logBuffer bytes.Buffer
+	buflog := log.New(&logBuffer, "[bytes] ", log.LstdFlags|log.Lshortfile)
+
+	buflog.Println("Writing to a bytes buffer")
+	buflog.Println("Writing more to the bytes buffer")
+
+	fmt.Println()
+	fmt.Println("Printing logs from bytes buffer below:")
+	fmt.Println(logBuffer.String())
+
+	jsonHandler := slog.NewJSONHandler(os.Stderr, nil)
+	jlog := slog.New(jsonHandler)
+	jlog.Info("First json log entry")
+	jlog.Info("kv args", "key1", 1, "key2", 2, "key3", true)
+	jlog.Warn("warning!!!")
+	jlog.Error("error!!!")
+}