tonic-build 为我们生成好了包含所有 rpc 的 trait,我们只需要挨个实现 trait 里面的方法即可。因为每个服务返回的要么是结果,要么是一个 tonic::Status 错误,这里我们可以巧妙利用 From trait,把我们的 abi::Error 转换成 tonic::Status。 测试rpc 时意外发现的黑魔法。这一讲我们来测试上一讲完成的 rpc。在测试...
Chalk is a library that implements the Rust trait system, based onProlog-ishlogic rules. See theChalk bookfor more information. FAQ How does chalk relate to rustc?The plan is to have rustc use thechalk-solvecrate (in this repo) to answer questions about Rust programs, for example, "Does...
Rust will consider trait objects with duplicated constraints to be the same type as without the duplicated constraint. For example the below code will now fail to compile. trait Trait {} impl Trait + Send { fn test(&self) { println!("one"); } //~ ERROR duplicate definitions with name...
相比于lru,这里对函数签名做了一些简化,省去了与Borrowtrait 有关的优化。 可以看到,与常规数据结构不同的是,这里的get方法,也需要接受&mut self,这给使用者带来很多困扰。例如我们可能希望同时持有多个V的不可变引用,这可以允许我们减少不必要的 copy,或者并发地使用他们。 letx=cache.get(&"a").unwrap().as...
Using the (reduced) code below, I don't understand why B needs to implement the Debug trait, as we are only interested in the Debug trait for the associated type Bar::Bartype, and Bar doesn't even appear in the output if we add the Debug...
- Grouping `impl` blocks next to their type (or trait) - Grouping private items after the `pub` item that uses them. - The intent is to help people quickly find the "relevant" details, allowing them to "dig deeper" as needed. Or put another way, the `pub` items serve as a table...
Rust will consider trait objects with duplicated constraints to be the same type as without the duplicated constraint. For example the below code will now fail to compile. trait Trait {} impl Trait + Send { fn test(&self) { println!("one"); } //~ ERROR duplicate definitions with name...
- Grouping `impl` blocks next to their type (or trait) - Grouping private items after the `pub` item that uses them. - The intent is to help people quickly find the "relevant" details, allowing them to "dig deeper" as needed. Or put another way, the `pub` items serve as a table...
设计数据库 schema:这一讲我们构建数据库表和函数,其中会着重介绍 EXCLUDE constraint 的用法。 系统设计:这一讲我们进一步细化系统层级都有哪些功能。 实现Reservation / Listener 子模块。 实现gRPC 接口。 构建CLI。 项目的需求如下(第一讲): 基本的架构设计(第二三讲): ...