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GetTupleStructField

cu29::prelude::reflect

Trait GetTupleStructField 

pub trait GetTupleStructField {
    // Required methods
    fn get_field<T>(&self, index: usize) -> Option<&T>
       where T: Reflect;
    fn get_field_mut<T>(&mut self, index: usize) -> Option<&mut T>
       where T: Reflect;
}
Expand description

A convenience trait which combines fetching and downcasting of tuple struct fields.

§Example

use bevy_reflect::{GetTupleStructField, Reflect};

#[derive(Reflect)]
struct Foo(String);

let mut foo = Foo("Hello, world!".to_string());

foo.get_field_mut::<String>(0).unwrap().truncate(5);
assert_eq!(foo.get_field::<String>(0), Some(&"Hello".to_string()));

Required Methods§

fn get_field<T>(&self, index: usize) -> Option<&T>
where T: Reflect,

Returns a reference to the value of the field with index index, downcast to T.

fn get_field_mut<T>(&mut self, index: usize) -> Option<&mut T>
where T: Reflect,

Returns a mutable reference to the value of the field with index index, downcast to T.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§