docs: enhanced simple example

README.md

@@ -12,6 +12,8 @@ func main(){
 }
 ```
 
+Check out this [simple example file](cmd/simple/main.go) for the basic usage.
+
 ## Multiple Log Instance
 
 Create a new log instance (instead of using the `Default`).

cmd/simple/main.go

@@ -1,15 +1,24 @@
 package main
 
 import (
-	"git.martin-riedl.de/golang/log"
 	"runtime"
+
+	"git.martin-riedl.de/golang/log"
 )
 
 func main() {
 	someMethod()
+	anotherMethod()
 }
 
 func someMethod() {
 	log.Default.Info("Hello World")
-	log.Default.With("os", runtime.GOOS).Info("environment detected")
+	log.Default.With("os", runtime.GOOS).Warning("environment detected")
+}
+
+func anotherMethod() {
+	log.Default.WithMap(map[string]any{
+		"foo": "bar",
+		"bar": "baz",
+	}).Info("Second Hello World")
 }

entry.go

@@ -49,6 +49,13 @@ func (entry *Entry) With(key string, value any) *Entry {
 	return entry
 }
 
+func (entry *Entry) WithMap(entries map[string]any) *Entry {
+	for key, value := range entries {
+		entry.With(key, value)
+	}
+	return entry
+}
+
 func (entry *Entry) WithContent(content []Content) *Entry {
 	entry.Content = append(entry.Content, content...)
 	return entry

formatter_json.go

@@ -65,7 +65,7 @@ func (formatter *FormatterJSON) Process(entry *Entry) {
 	}
 }
 
-func (formatter *FormatterJSON) End(entry *Entry) []byte {
+func (formatter *FormatterJSON) End(_ *Entry) []byte {
 	// build JSON
 	data, err := json.Marshal(formatter.data)
 	if err != nil {

formatter_keyvalue.go

@@ -82,7 +82,7 @@ func (formatter *FormatterKeyValue) addKV(key string, value any) {
 	formatter.builder.WriteString(val)
 }
 
-func (formatter *FormatterKeyValue) End(entry *Entry) []byte {
+func (formatter *FormatterKeyValue) End(_ *Entry) []byte {
 	// send data
 	return []byte(formatter.builder.String())
 }

logger.go

@@ -113,6 +113,12 @@ func (logger *Logger) With(key string, value any) *Entry {
 	return entry
 }
 
+func (logger *Logger) WithMap(entries map[string]any) *Entry {
+	entry := NewEntry(logger)
+	entry.WithMap(entries)
+	return entry
+}
+
 func (logger *Logger) WithContent(content []Content) *Entry {
 	entry := NewEntry(logger)
 	entry.WithContent(content)