Question

我有一些代码试图将字符串列表读入struct值。使用下面的代码，我尝试只打印来自input_file内POLIR::generate_config()向量的行。我收到了错误：

error: expected type, found `{`
 --> src/main.rs:5:27
  |
5 |         for line in args: {
  |                           ^ expecting a type here because of type ascription

我在这里做错了什么？

struct POLIR {}

impl POLIR {
    fn generate_config(&self, args: Vec<String>) {
        for line in args: {
            println!{"{}", line};
        }
    }
}

fn main() {
    //other program stuff
    let input_file = lines_from_file(input_file);

    let system = POLIR {};

    POLIR::generate_config(&system, input_file);
}

Answer 1

通过从POLIR::generate_config()删除冒号来解决此错误：

fn generate_config(&self, args: Vec<String>) {
    for line in args {
        println!{"{}", line};
    }
}

＆＃34;由于类型归属而在这里期待类型＆＃34;

1 个答案: