add time graphics (not used yet)

guide/http-get.go

@@ -0,0 +1,26 @@
+//go:build ignore
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"runtime/trace"
+	"time"
+)
+
+func main() {
+	traceF, _ := os.Create("trace.out")
+	trace.Start(traceF)
+	defer trace.Stop()
+
+	start := time.Now()
+	res, err := http.Get("https://example.org/")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Printf("%d\n", res.StatusCode)
+	log.Printf("main() took: %s\n", time.Since(start))
+}