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Eugene's questions

Martin Hope
Eugene
Asked: 2024-11-18 02:42:12 +0800 CST
  • 5

我正在尝试将 ORM 添加到现有结构中：

#[derive(Debug, Queryable, Selectable)]
#[diesel(table_name = crate::schema::tokens)]
pub struct Token {
    pub public_key: String,
    pub name: Option<String>,

cannot find type `name` in module `crate::schema::tokens`
not found in `crate::schema::tokens`

在结构体的字段上方添加哪些宏来忽略数据库操作？

rust
Martin Hope
Eugene
Asked: 2023-12-25 21:46:04 +0800 CST
  • 5

我收到错误：

Property 'ip' does not exist on type 'IpDetails | Error'.
  Property 'ip' does not exist on type 'Error'.ts(2339)

即使我通过("message" in res)或用于isError缩小类型来检查类型。是我做错了什么还是 TypeScript 的 bug？

interface IpDetails {
    ip : string,
}

interface Error {
    error: {
        code : number,
        message: string,
    },
}

let collection: IpDetails[] = [];

function isError(res: any | Error): res is Error {
    return (res as Error).error !== undefined;
}

const getIpData = async (ipAddress: string, config: any = {}): Promise<IpDetails|Error> => {
  return new Promise((resolve, reject) => {
     resolve({ip : '1.1.1.1'});
  });
}

(async () => {
    let res = await getIpData('1.1.1.1');

    if (!isError(res)) { // if ('error' in res)
        let dublicate = collection.find(entry => entry.ip === res.ip); // <--- ERROR
    }
})();
typescript