The use of operators pairs (`=+`, `=-` or `=!`) where the reversed, single operator was meant (`+=`, `-=` or `!=`) will compile and run, but not produce the expected results.

This rule raises an issue when `=+`, `=-` and `=!` are used without any space between the two operators and when there is at least one whitespace after.

## Noncompliant Code Example

    let target =-5;
    let num = 3;

    target =- num;  // Noncompliant; target = -3. Is that really what's meant?
    target =+ num; // Noncompliant; target = 3

## Compliant Solution

    let target = -5;
    let num = 3;

    target = -num;  // Compliant; intent to assign inverse value of num is clear
    target += num;