Исходники и презентации

lessons/errors/many_times_handling_1/main.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+)
+
+func GetRoute(lat, lon float32) (string, error) {
+	err := validateCoordinates(lat, lon)
+	if err != nil {
+		fmt.Println("incorrect coordinates") // again
+		return "", err
+	}
+
+	return "route", nil
+}
+
+func validateCoordinates(lat, lon float32) error {
+	if lat > 90. || lat < -90. {
+		fmt.Println("incorrect latitude")
+		return errors.New("incorrect latitude")
+	}
+	if lon > 180. || lon < -180. {
+		fmt.Println("incorrect longitude")
+		return errors.New("incorrect longitude")
+	}
+
+	return nil
+}