Augmenting Assignment statement

^Syntax
AssignmentStatement :
      Expression = Expression
   | Expression += Expression
   | Expression -= Expression
   | Expression %= Expression
   | Expression **= Expression
   | Expression <<= Expression
   | Expression >>= Expression
   | Expression |= Expression
   | Expression ^= Expression
   | Expression &= Expression

Augmenting assignment statements combine arithmetic and logical binary operators with assignment statements.

An augmenting assignment statement consists of an expression that holds a mutable place, followed by one of the arithmetic or logical binary operators, followed by an equals sign (=) and a value expression.

Example:

fn example() -> u8 {
    let mut a: u8 = 1
    let b: u8 = 2
    a += b
    a -= b
    a *= b
    a /= b
    a %= b
    a **= b
    a <<= b
    a >>= b
    a |= b
    a ^= b
    a &= b
    return a
}