In programming, creating an object with a fixed set of properties during initialization is a common practice. For instance, consider defining a structure to represent a car with properties like `make`, `model`, and `year`. Attempting to add a property like `wingspan` later might lead to errors, especially in strictly-typed languages like TypeScript, because the initial structure does not define such a property. This behavior is often enforced by compilers or runtime environments to ensure data integrity and predictability.
Restricting objects to predefined properties offers several advantages. It improves code maintainability by clearly defining the expected structure of an object, making it easier to understand and modify. This practice also enhances type safety, as the compiler can verify that an object conforms to its intended type. Historically, this approach originated from a need for stricter data management, especially as software systems became more complex. In the early days of programming, loosely-typed languages often permitted adding arbitrary properties to objects at runtime, which could lead to unpredictable behavior and debugging difficulties. The move towards stricter type systems reflected the industry’s growing focus on robust and reliable software.
