Hi Maintenance

High-maintenance code not only is verbose but also tends to rely on unstated, poorly stated, or incompletely stated assumptions. If you want to understand that type of code, you need long chains of reasoning to figure out how and why it works, and under which conditions it could start failing when other parts of the system are updated. The reliance on hidden assumptions is probably the most telling feature of high-maintenance code. So let's look at this in a little more detail.