1

我正在玩弄ipc-channel板条箱，试图构建一个包含以下内容的通用结构IpcOneShotServer：

extern crate ipc_channel;
extern crate serde;

use ipc_channel::{ipc, Error};
use serde::{Deserialize, Serialize};

struct Supervisor<T> {
    server: ipc::IpcOneShotServer<T>,
}

impl<T> Supervisor<T>
where
    T: for<'de> Deserialize<'de> + Serialize,
{
    fn new() -> Result<Supervisor<T>, Error> {
        let (server, _) = ipc::IpcOneShotServer::new()?;
        Ok(Supervisor { server: server })
    }
}

fn main() {}

当我尝试编译此代码时，出现以下错误

error[E0277]: the trait bound `for<'de> T: serde::de::Deserialize<'de>` is not satisfied
  --> src/main.rs:67:27
   |
67 |         let (server, _) = ipc::IpcOneShotServer::new()?;
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `for<'de> serde::de::Deserialize<'de>` is not implemented for `T`
   |
   = help: consider adding a `where for<'de> T: serde::de::Deserialize<'de>` bound
   = note: required by `<ipc_channel::ipc::IpcOneShotServer<T>>::new`

error[E0277]: the trait bound `T: serde::ser::Serialize` is not satisfied
  --> src/main.rs:67:27
   |
67 |         let (server, _) = ipc::IpcOneShotServer::new()?;
   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `T`
   |
   = help: consider adding a `where T: serde::ser::Serialize` bound
   = note: required by `<ipc_channel::ipc::IpcOneShotServer<T>>::new`

我不确定我在这里缺少什么。我已经T用Deserialize和限制了这个特征Serialize。我认为通过将 impl 中的特征与其他两个特征绑定在一起，这将告诉类型检查器，只要 a Supervisorof 类型T实现Deserialize并且Serialize调用ipc::IpcOneShotServer::new().

4

0 回答 0