Attribute Macro opimps::impl_op_assign

#[impl_op_assign]

The direct implementation for assignment-based operators.

pub struct TestObj {
    pub val: i32
}
 
#[opimps::impl_op_assign(std::ops::MulAssign)]
fn mul_assign(self: TestObj, rhs: TestObj) {
   self.val *= rhs.val;
}
 
#[opimps::impl_op_assign(std::ops::MulAssign)]
fn mul_assign(self: TestObj, rhs: &TestObj) {
   self.val *= rhs.val;
}
 
let mut a = TestObj { val: 4 };
let b = TestObj { val: 7 };
 
a *= b;
assert_eq!(28, a.val);
 
let mut a = TestObj { val: 4 };
let b = TestObj { val: 7 };
a *= &b;
 
assert_eq!(28, a.val);
assert_eq!(7, b.val);