For questions related to Trait Objects (dynamically-dispatched objects) in Rust
Trait objects are the dynamically dispatched objects in Rust. They are unsized, so they are used behind some kind of reference (Box, for example).
Questions tagged [trait-objects]
183 questions
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How to convert trait object to "sub-trait" object?
This code:
trait A {}
trait B: A {}
struct S;
impl A for S {}
impl B for S {}
fn main() {
let s = S;
let trait_obj_b: &B = &s;
let trait_obj_a: &A = trait_obj_b;
}
fails with the error:
error[E0308]: mismatched types
-->…
Sergey Mitskevich
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How are trait objects implemented in Rust?
I'm trying to understand how trait objects are implemented in Rust. Please let me know if the following understanding is correct.
I have a function that takes any type that implements the Write trait:
fn some_func(write_to: &mut Write) {}
In any…
user3169543
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- 16
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0 answers
rust trait object dispatch compiler error
I'm struggling in dynamic dispatch for the whole day. try to work trait object with generic parameter, I know that can't be made into object. But I still want to write Object-Oriented code. For writing oo code, there are many Box types in…
holi-java
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