What does "^=" in c++ mean? : <p>I read mutation of genetic algorithm in this post:
<a href="https://stackoverflow.com/questions/4725515/c-genetic-algorithm-mutation-error">c++ Genetic Algorithm Mutation error</a></p>

<p>What does <code>^=</code> mean in <code>Child1.binary_code[z] ^= 1</code>?
Thank you in advance.</p>
