Go构建可复用的包(导包)代码练习

SOYANGA · Sep 25, 2019 · af9a6b5 · af9a6b5
1 parent 871d141
commit af9a6b5
Showing 2 changed files with 47 additions and 0 deletions.
diff --git a/code/ch14/client/package_test.go b/code/ch14/client/package_test.go
@@ -0,0 +1,20 @@
+package client
+
+//会引入我们GetFibonacci所在的本地包
+import (
+	"ch14/series"
+	"testing"
+)
+
+func TestPackage(t *testing.T) {
+	t.Log(series.GetFibonacci(5))
+	//t.Log(series.square(5))
+}
+
+//执行结果 重名的init方法被执行两次
+//init1
+//init2
+//=== RUN   TestPackage
+//--- PASS: TestPackage (0.00s)
+//package_test.go:10: [1 1 2 3 5] <nil>
+//PASS
diff --git a/code/ch14/series/my_series.go b/code/ch14/series/my_series.go
@@ -0,0 +1,27 @@
+package series
+
+import "fmt"
+
+func init() {
+	fmt.Println("init1")
+}
+
+func init() {
+	fmt.Println("init2")
+}
+
+
+
+//大写字母开头包外可以访问
+func GetFibonacci(n int) ([]int, error) {
+	fibList := []int{1, 1}
+	for i := 2; /*短变量声明*/ i < n; i++ {
+		fibList = append(fibList, fibList[i-2]+fibList[i-1])
+	}
+	return fibList, nil
+}
+
+//小写字母开头包外不能访问
+func square(n int) int {
+	return n * n
+}