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Default Generic Type Parameters and Operator Overloading

<aside> 💡 Note: The Default Generic Type Parameter specifier , Allows us to Specify an Specific Type. This uses <PlaceholderType=ConcreteType> syntax.

</aside>

pub trait Add<Rhs = Self> {
    type Output;

    // Required method
    fn add(self, rhs: Rhs) -> Self::Output;
}

The best Example of this is using it on overload operators

• Using traits to overload operators.
• Example: Add, Sub, Mul.

use std::ops::Add;

// Define a struct
struct MyStruct {
    value: i32,
}

// Implement the `Add` trait to overload the `+` operator
impl Add for MyStruct {
    type Output = MyStruct;

    fn add(self, other: MyStruct) -> MyStruct {
        MyStruct {
            value: self.value + other.value,
        }
    }
}

fn main() {
    let a = MyStruct { value: 10 };
    let b = MyStruct { value: 20 };
    let c = a + b; // Using the overloaded `+` operator
    println!("Result: {}", c.value); // Result: 30
}