iter(); // std::slice::Iter<'_, {integer}> // iter() -- borrow as immutable, 不能进行修改 // if let Some(first) = v1_iter.next() { // *first += 4; // } assert_eq!(v1_iter.next(), Some(&1)); assert_eq!(v1_iter.next(), Some(&2)); assert_eq!(v1_iter....
高级函数/闭包:函数指针(function pointer)和返回闭包(return closures)。 宏(macro): 一种定义代码的方法,这些方法会在编译的时候定义更多的代码(ways to define code that defines more code at compile time)。unsafe Rust[2] 目前我们代码都是基于内存安全的,并且会在编译阶段进行限制报错不安全代码。
[assert, static] facebookexperimental/MIRAI - an abstract interpreter operating on Rust's mid-level intermediate representation (MIR) static_assertions - Compile-time assertions to ensure that invariants are met verus-lang/verus - Verified Rust for low-level systems code Testing [test, testing] ...
println!("{}, world!", s1); // Won't compile. The value of s1 has already been dropped. 左右滑动查看完整代码 在将s1分配给s2之后(在let s2 = s1赋值语句中),s1的值就被释放了。因此,赋值语句执行后,s1就失效了。s1被释放后的内存状态: 图11:s1被释放后的内存状态 9.所有权如何变动 在Rust...
assert_eq!(5, *y); 1. 2. 3. 4. 5. 在上面的代码中,我们创建了一个对i32类型数据的引用,然后使用解引用运算符跟踪被引用的数据。变量x存储一个i32类型的值5。我们将y设置为对x的引用。 下面是栈内存的状态: 栈内存状态 我们可以断言x等于5。然而,假如我们需要对y中的数据进行断言,就必须使用*y来跟...
3.Compile与Runtime Rust支持静态、动态链接。 Runtime时程序结构封闭。但由于标准库的元编程功能强大,即便是对比Java这种Runtime灵活的语言也不会落多少下风。 4.命名规范 C语言风格,类似Go,越简单越好。我认为语言上偏简单的设计,则对工程师的能力要求更强。
[assert, static] facebookexperimental/MIRAI - an abstract interpreter operating on Rust's mid-level intermediate representation (MIR) static_assertions - Compile-time assertions to ensure that invariants are met verus-lang/verus - Verified Rust for low-level systems code Testing [test, testing] ...
1. 简介 反射reflection意味着可以在运行时获得类型的所有详细信息,包括字段方法等,并可以进行替换。rust只有“compile-time reflection”...
// this is unknown at compile-time t.print(); // Rust has to check the pointer at run-time // to figure out whether to use Struct's // or Struct2's implementation of "print" // so the pointer has to be double-width assert_eq!(DOUBLE_WIDTH, size_of::<&dyn Trait>()); } ...
/// Wrap the given `expr` in a terminating scope using `hir::ExprKind::DropTemps`./// In terms of drop order, it has the same effect as wrapping `expr` in/// `{ let _t = $expr; _t }` but should provide better compile-time performance./// The drop order can be important ...