derive_more:提供额外的派生宏,简化了常见派生特性,如Clone, Eq, PartialEq等的实现过程。 proc-macro-error:提供过程宏中错误报告的辅助工具,使错误处理更加友好和易于定位问题。 strum:提供一系列宏,用于枚举类型与字符串之间的转换以及其他枚举相关的工具。 proc-macro-crate:帮助过程宏定位本身所在的crate,解决宏内...
derive_more: 通用派生宏集合 最佳实践 性能考虑 // 避免不必要的Clone实现 #[derive(Debug, Copy)] // 优先使用Copy而不是Clone struct SmallType { x: i32, y: i32, } 属性组织 #[derive(Debug, Clone, Serialize)] #[serde(rename_all = "camelCase")] #[serde(deny_unknown_fields)] struct ...
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Figure 4-4.A more complex tree of ownership There are many ownership relationships here, but each one is pretty straightforward:composersowns a vector; the vector owns its elements, each of which is aPersonstructure; each structure owns its fields; and the string field owns its text. When con...
#[derive(Clone,Factory)]#[factory(model="Country",table="countries")]struct CountryFactory{pub name:String,pub code:String,}#[derive(Clone,Factory)]#[factory(model="City",table="cities")]struct CityFactory<'a>{pub name:String,pub country:Association<'a,Country,CountryFactory>,} ...
这使Serde异常有效,因为数据结构本质上知道如何序列化或反序列化自身,并且它们通过实现SerializeorDeserialize特性来实现。幸运的是,这要归功于大多数类型,这要归功于derive宏。您可能会像我一样遇到陷阱,在这篇博客文章中,作者想特别谈一谈:转义序列。 ReadMore:https://d3lm.medium.com/rust-beware-of-escape-...
#[derive(Properties)] pubstruct Handle<T> where T:'static, { // pub struct HandleId(pub Uuid); pubid: HandleId, #[property(ignore)] marker: PhantomData<T>, } 这部分源码我觉得是比较有意思的,因为除了Handle结构体之外,在这部分源码中还实现了另一个结构体: ...
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