add builder

Author: senghoo

06_builder/builder.go

@@ -0,0 +1,27 @@
+package builder
+
+//Builder 是生成器接口
+type Builder interface {
+	Part1()
+	Part2()
+	Part3()
+	GetResult() string
+}
+
+type Director struct {
+	builder Builder
+}
+
+// NewDirector ...
+func NewDirector(builder Builder) *Director {
+	return &Director{
+		builder: builder,
+	}
+}
+
+//Construct Product
+func (d *Director) Construct() {
+	d.builder.Part1()
+	d.builder.Part2()
+	d.builder.Part3()
+}