Merge pull request #545 from devlights/add-panic-example

Author: devlights

examples/basic/panics/examples.go

@@ -14,4 +14,5 @@ func NewRegister() mapping.Register {
 // Regist -- 登録します.
 func (r *register) Regist(m mapping.ExampleMapping) {
 	m["panics_panic_and_recover"] = PanicAndRecover
+	m["panics_panic_and_defer"] = PanicAndDefer
 }

examples/basic/panics/panic_and_defer.go

@@ -0,0 +1,23 @@
+package panics
+
+import "github.com/devlights/gomy/output"
+
+// PanicAndDefer -- panicが呼ばれた場合でもdeferは処理されることを確認するサンプルです.
+func PanicAndDefer() error {
+	defer output.Stdoutl("[root]", "call defer")
+
+	var (
+		raise = func() {
+			defer output.Stdoutl("[raise]", "call defer")
+			panic("test")
+		}
+		proc = func() {
+			defer output.Stdoutl("[caller]", "call defer")
+			raise()
+		}
+	)
+
+	proc()
+
+	return nil
+}

examples/basic/panics/panic_and_recover.go

@@ -17,6 +17,7 @@ func PanicAndRecover() error {
 }
 
 func catch() (err error) {
+	defer output.Stdoutl("[panic]", "panic時deferは呼ばれる")
 	defer func() {
 		// panicはrecoverで補足できるが、取得できる値は interface{} となる
 		if obj := recover(); obj != nil {