Currently UnsafeCell does not implement Copy. It would be beneficial if it could, for at least two reasons: Easier initialization of fixed arrays, e g: [UnsafeCell::new(0i32); 75] It enables people to make cell-like types which are Copy...
def_id, LangItem::Copy); let trait_def_safety = if is_copy { use rustc_type_ir::inherent::*; Member compiler-errors Dec 7, 2024 Choose a reason for hiding this comment The reason will be displayed to describe this comment to others. Learn more. Hide comment don't do ...
// Rust program to declare and implement a traitstructStudent { id:u32, name:&'staticstr, fee:u32}//declare a traittraitPrintStudent {fnprint(&self); }//implement the traitimplPrintStudentforStudent {fnprint(&self){ println!("Student id : {}",self.id ); println!("Student name : ...
From what I can tell there's no great workaround for the blanket implementation of a foreign trait thing, but is there another way to get the same behavior?rustShare Improve this question Follow asked Jan 27 at 17:56 Edward Peters 3,99733 gold badges2222 silver badges4343 bronze badges...
= note: `#[warn(non_camel_case_types)]` on bydefaulterror[E0382]: use of moved value: `kobe`--> src/main.rs:14:21|12| let kobe =f_closure{name:name,};| ---move occurs because `kobe` has type `f_closure`, which does not implement the `Copy` trait13| println!("name {}...
Why does the Rust compiler not use the expected trait implementation once I add an implementation for Vec<T>? 6 Differences between 2 styles of default implementations in a trait? 4 Why does SmallVec have different behaviour when storing types with lifetimes compared to Vec? 0 The trait ...
[Feature🚀] Add SendMessageBackHook trait for rust #1902 [Enhancement⚡️] Optimize MessageStore trait #1901 What problems does the refactor aim to solve? No response Do you have any specific design or implementation considerations? No response Is there a related issue or PR? No response ...
Implement MIR const trait stability checks rust-lang/project-const-traits#16 cc @rust-lang/project-const-traits r?@RalfJung Some changes occurred to the CTFE machinery cc @rust-lang/wg-const-eval
(note: I cannot annotate the updated_vec let binding with an "impl" type, so I will specify a type inferred by the rust-analyzer in a comment near the binding's definition) Fn trait: fn main() { let some_vec = vec![1, 3, 4]; let get_that_same_vec = || { // "get_that...
There's nothing special about the fact that the trait has no generics. Types in Rust use PascalCase, not camelCase, so I've changed the name. I switched to a where clause because it's too hard to read the bounds when they are crammed into the generic declaration. Sha...