Yes, you can define a default value for a type by implementing the Default trait for that type. The Default trait provides a way to create a default value for a type when one is needed.
#[derive(Debug)]
struct MyType {
value: i32,
}
impl Default for MyType {
fn default() -> Self {
MyType { value: 42 }
}
}
fn main() {
let my_variable: MyType = Default::default();
println!("Default value: {:?}", my_variable);
}
I defined a custom type MyType with a field value then
I implemented the Default trait for MyType. The default function returns an instance of MyType with a default value for the value field (in this case, 42).
In the main function, we create a variable and initialize it with the default value.
When you run this code, you'll see that my_variable is initialized with the default value defined in the Default implementation for MyType.