Purpose of Design Patterns

While writing code, developers consistently solve problems of various kinds. In some cases, they need to decide how to connect objects. While in other instances, the challenge lies in expressing a specific type of behavior. These are discreet kinds of problems. Many engineers have found repetitive patterns of questions as well as answers to them. That is why design patterns (see software design pattern) exist; to solve repeating types of problems in a standard fashion instead of reinventing the wheel.