finish object pool pattern

creation/04_object_pool/obejct_poo.go

@@ -1,8 +1,13 @@
 package objectpool
 
+import (
+	"fmt"
+	"strconv"
+)
+
 type doctor struct {
 	name string
-	kind int //科室
+	kind int //科室,1内科，2外科
 }
 
 type pool chan *doctor
@@ -11,13 +16,16 @@ func newPool(total int) pool {
 	p := make(pool, total)
 
 	for i := 0; i < total; i++ {
-		p <- new(doctor)
+
+		dc := new(doctor)
+		dc.name = "doctor: " + strconv.Itoa(i)
+		p <- dc
 	}
 
 	return p
 }
 
 //surgery
-func (d doctor) surgery() {
-
+func (d doctor) surgery(someone string) {
+	fmt.Println("doctor:", d.name, "do surgery for", someone)
 }

creation/04_object_pool/object_pool_test.go

@@ -1,20 +1,30 @@
 package objectpool
 
 import (
+	"fmt"
 	"testing"
 )
 
 func TestObjectPool(t *testing.T) {
 
-	p := newPool(2)
+	p := newPool(3)
+
+	doc1 := <-p
+	doc1.surgery("tom")
+
+	doc2 := <-p
+	doc2.surgery("rose")
+
+	doc3 := <-p
+	doc3.surgery("kate")
 
 	select {
 	case obj := <-p:
-		obj.surgery( /*...*/ )
-
+		obj.surgery("lily")
 		p <- obj
 	default:
 		// No more objects left — retry later or fail
+		fmt.Println("No more objects left, this moment")
 		return
 	}
 }