Function ExampleAllowUndefinedVariables_zero_value_functions

expr_test.go:573–598

()

}

func ExampleAllowUndefinedVariables_zero_value_functions() {
	code := `words == "" ? Split("foo,bar", ",") : Split(words, ",")`

	// Env is map[string]string type on which methods are defined.
	env := mock.MapStringStringEnv{}

	options := []expr.Option{
		expr.Env(env),
		expr.AllowUndefinedVariables(), // Allow to use undefined variables.
	}

	program, err := expr.Compile(code, options...)
	if err != nil {
		fmt.Printf("%v", err)
		return
	}

	output, err := expr.Run(program, env)
	if err != nil {
		fmt.Printf("%v", err)
		return
	}
	fmt.Printf("%v", output)

	// Output: [foo bar]
}

type patcher struct{}