Исходники и презентации

lessons/strings/byte_slice_to_string/comparison_test.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"testing"
+	"unsafe"
+)
+
+// go test -bench=. -benchmem comparison_test.go
+
+func Convert(data []byte) string {
+	if len(data) == 0 {
+		return ""
+	}
+
+	return unsafe.String(unsafe.SliceData(data), len(data))
+}
+
+var Result string
+
+func BenchmarkConvertion(b *testing.B) {
+	slice := []byte("Hello world!!!")
+	for i := 0; i < b.N; i++ {
+		Result = string(slice)
+	}
+}
+
+func BenchmarkUnsafeConvertion(b *testing.B) {
+	slice := []byte("Hello world!!!")
+	for i := 0; i < b.N; i++ {
+		Result = Convert(slice)
+	}
+}