walk: loop on the string fields

walk/walk.go

@@ -6,6 +6,7 @@ import (
 
 func Walk(x interface{}, fn func(string)) {
 	val := reflect.ValueOf(x)
-	field := val.Field(0)
+	for i := 0; i < val.NumField(); i++ {
-	fn(field.String())
+		fn(val.Field(i).String())
+	}
 }

walk/walk_test.go

@@ -18,6 +18,14 @@ func TestWalk(t *testing.T) {
 			}{"Chris"},
 			[]string{"Chris"},
 		},
+		{
+			"struct with two string fields",
+			struct {
+				Name string
+				City string
+			}{"Chris", "London"},
+			[]string{"Chris", "London"},
+		},
 	}
 
 	for _, test := range cases {