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Software development is a complex and creative process that requires developers not only to have technical expertise but also to be able to effectively manage code and its development. To achieve these goals, developers use several principles, among which DRY, SOLID, and YAGNI occupy a special place. Let’s take a closer look at each of them.
DRY: Don’t Repeat Yourself
The DRY principle determines that any part of the program code must have a single, inseparable place in the system. In other words, each program element should have a single representative so that changes are made in only one place. This helps maintain and develop the code base, reduces the likelihood of errors, and makes the code more understandable.
When using the DRY principle, developers avoid copying code, instead using functions, classes, or other mechanisms to provide flexibility and ease of management of the codebase.
SOLID: Five Principles of Object-Oriented Programming
SOLID is an acronym that includes five basic principles of object-oriented programming:
- Single Responsibility Principle (SRP): A class should have only one reason to change. This helps keep the code clear and reduces the chance of errors when changing.
- Open/Closed Principle (OCP): program entities should be open for extension, but closed for modification. This provides flexibility and the ability to add new functionality without changing existing code.
- Liskov Substitution Principle (LSP): objects of the base class must be replaced by objects of derived classes without changing the properties of the program. This contributes to the creation of stable and reliable systems.
- Interface Segregation Principle (ISP): Clients should not depend on interfaces they do not use. This helps avoid unnecessary dependencies between classes.
- Dependency Inversion Principle (DIP): High-level modules should not depend on low-level modules. Both must depend on abstractions. This facilitates the creation of flexible and easily modified systems.
YAGNI: You Aren’t Gonna Need It
The YAGNI principle is used to introduce functionality into a program. According to this principle, developers refrain from adding functionality that may be useful in the future but is not needed at present.
This principle promotes the creation of simple and effective solutions. Developers avoid unnecessary code and functionality, which makes the system easier to understand and support.
IT courses for children
To learn programming, it is important to gain high-quality knowledge, especially when it comes to children. Courses for children are an excellent option for developing their skills. They help you learn the basics of programming playfully and interestingly, stimulating a creative approach to problem-solving.
To obtain complete and in-depth knowledge in the field of programming, it is recommended to choose courses from the GoMother IT school. These courses provide quality education, taking into account all modern trends and requirements of the IT industry. They will give you excellent skills and a readiness to take on the challenges that come with programming professionals.