#[derive(Debug)]pubstructSelfRef<'a>{str:String,str_ref:Option<&'astr>,}fnmain(){letstr="Hello".to_string();letmutself_ref=SelfRef{str,str_ref:None};self_ref.str_ref=Some(self_ref.str.deref());println!("{:?}",s
struct PinnedWriteHelloFile { // 使用 pin_project 属性 #[pin] future: impl Future<Output = ()>, // 不需要 pin 的字段 name: String, } impl Future for PinnedWriteHelloFile { fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> { // 安全地访问被 pin 的...
自引用结构体(self-referential struct)非常容易理解:就是结构体成员引用(持有指针)了当前结构体的其他成员。举个例子,假如我们有一个数据架构SelfReferenceFoo(注意:结构体内使用引用需要显式用上生命期注解): structSelfReferenceFoo<'a> { data:String, data_ref: &'aString, } 其中:data是一个String类型的变量...
进而,成就异步编程中的“自引用结构体self-referential struct”。 自定义数据结构的内存布局 复合数据结构的内存布局描绘了该数据结构(紧内一层)字段的内存位置“摆放”关系(比如,间隙与次序等)。在层叠嵌套的数据结构中,内存布局都是就某一层数据结构而言的。它既承接不了来自外层父数据结构的内存布局,也决定不了...
自引用结构体(Self-Referential Structs)是一个这个样的结构体,它内部某个成员是对另外一个成员的引用。比如这样: structTest<'a>{a:String,b:&'aString,}fnmain(){leta=String::from("Hello");let_test=Test{a,b:&a};// let _test = Test { a, b: &a };// | - ^^ value borrowed here af...
use std::pin::Pin;struct SelfReferential{value:String,reference:*constString,}impl SelfReferential{fnnew(value:String)->Pin<Box<SelfReferential>>{letmut instance=Box::pin(SelfReferential{value,reference:std::ptr::null(),});instance.as_mut().reference=&instance.value;instance}} ...
std::PhantomPinned— 禁止变量值在内存中“被挪来挪去”。进而,成就异步编程中的“自引用结构体self-referential struct”。 自定义数据结构的内存布局 复合数据结构的内存布局描绘了该数据结构(紧内一层)字段的内存位置“摆放”关系(比如,间隙与次序等)。在层叠嵌套的数据结构中,内存布局都是就某一层数据结构而言...
🔗Self-Referential Structs As explained above, the state machine transformation stores the local variables of each pause point in a struct. For small examples like ourexamplefunction, this was straightforward and did not lead to any problems. However, things become more difficult when variables ref...
Spec URL: https://cheimes.fedorapeople.org/rust/rust-ouroboros.spec SRPM URL: https://cheimes.fedorapeople.org/rust/rust-ouroboros-0.9.3-1.fc35.src.rpm Description: Easy, safe self-referential struct generation Fedora Account System Username: cheimes Notes: - Package is an dependency for upco...
until drop Address sensitivity some interface is relay on pinned state self-referenced type: Future leverage the type system Pin how Pin works restrict access to Ptr PhantomPinned Example types self-referential struct intrusive list Drop Projection and Structural Pinning...