Исходники и презентации

lessons/strings/string_to_byte_slice/comparison_test.go

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