Исходники и презентации

lessons/errors/error_status/main.go

@@ -0,0 +1,43 @@
+package main
+
+import "fmt"
+
+const (
+	OkStatus = iota
+	EvenNumberErr
+	ZeroNumberErr
+)
+
+func divideV1(lhs, rhs int) (int, int) {
+	if rhs == 0 {
+		return 0, ZeroNumberErr
+	} else if lhs%2 == 0 || rhs%2 == 0 {
+		return 0, EvenNumberErr
+	}
+
+	return lhs / rhs, OkStatus
+}
+
+func divideV2(lhs, rhs int, status *int) int {
+	if rhs == 0 {
+		*status = ZeroNumberErr
+		return 0
+	} else if lhs%2 == 0 || rhs%2 == 0 {
+		*status = EvenNumberErr
+		return 0
+	}
+
+	*status = OkStatus
+	return lhs / rhs
+}
+
+func main() {
+	x := 100
+	y := 0
+
+	value, status := divideV1(x, y)
+	fmt.Println(value, status)
+
+	value = divideV2(x, y, &status)
+	fmt.Println(value, status)
+}