主要研究领域包括人工智能编译器、大模型推理系统和国产硬件的生态建设。 rustlings是一个rustOJ形式的学习平台,通过90多道题目来测试rust语法的掌握程度,第一次接触的时候会感觉非常新颖,通过rustlings进行学习也非常高效。 我的任务: 学员晋级条件: 学员在基础阶段可选Rust基础或C++基础完成习题,将一个方向的习题完成并...
3 | let s1 = String::from("hello"); | -- move occurs because `s1` has type `String`, which does not implement the `Copy` trait 4 | let s2 = s1; | -- value moved here 5 | 6 | println!("{}, world!", s1); | ^^ value borrowed here after move | = note: this error ...
else - fallback for if and if let control flow constructs enum - define an enumeration extern - link an external crate, function, or variable false - Boolean false literal fn - define a function or the function pointer type for - loop over items from an iterator, implement a trait, or ...
("{a}") } // error[E0382]: borrow of moved value: `a` // --> src/main.rs:6:15 // | // 4 | let a = "世界,你好哇".to_string(); // | - move occurs because `a` has type `String`, which does not implement the `Copy` trait // 5 | let b = a ; // | - ...
|-- move occurs because `s1` has type `String`, which does not implement the `Copy` trait3| let s2 = s1; |-- value moved here4|5| println!("{}, world!", s1); | ^^ value borrowed hereaftermoveFormore information about thiserror, try `rustc--explain E0382`.error: couldnotcompi...
int y = &x // can't access x from here; creates dangling reference 左右滑动查看完整代码 悬空引用 悬空引用的意思是指向已分配或已释放内存位置的指针。如果一个程序(也称为进程)引用了已释放或已清除数据的内存,就可能会崩溃或产生无法预知的结果。
error[E0382]: borrow of moved value:p--> src/main.rs:14:28 | 11 | let mut p = Point { x: 1, y: 2 }; | --- move occurs becausephas typePoint, which does not implement theCopytrait 12 | p.x += 1; 13 | f2(p); | - value moved here 14 | println!("{},{}", p....
:<String>();// mutable reference is not Copy is_copy::<&mutString>();// array / tuple with values that not Copy is not Copy is_copy::<[Vec<u8>; 4]>(); is_copy::<(String, u32)>();}fnmain() { types_impl_copy_trait(); types_not_impl_copy_trait();}总结...
("hello word", *r.to_string());| ^^^ no implementation for `&str == str`|= help: the trait `PartialEq<str>` is not implemented for `&str`= help: the following other types implement trait `PartialEq<Rhs>`:<&'a str as PartialEq<OsString>><&'a str as PartialEq<String>><&...
=help: the trait`std::fmt::Debug`is not implementedfor`Rectangle`=note:add`#[derive(Debug)]`or manually implement`std::fmt::Debug` 这里告诉我们rust确实有打印, 但是是Debug模式, 需要我们显式的开启, 我们将代码修改为 fnmain(){letrectange1=Rectangle{width:20,height:30};println!("rec = {:...