Structs
Structs (short for structures) are a composite data type in programming that group together variables of different data types under a single name, allowing them to be treated as a single unit. They are commonly used to represent real-world entities, such as a person with attributes like name, age, and address, or to organize related data in a structured way. In languages like C, C++, and Go, structs are a fundamental building block for creating custom data types without the overhead of classes.
Developers should learn and use structs when they need to bundle multiple pieces of data into a cohesive unit, especially in performance-critical or low-level applications where object-oriented features like inheritance are unnecessary. They are ideal for scenarios such as defining data models in systems programming, handling configuration settings, or passing grouped parameters to functions, as they provide a lightweight and efficient way to manage complex data structures. In languages like Rust or Swift, structs are also used for value types with copy semantics, enhancing memory safety and performance.