Description: A first-class object is a fundamental concept in programming that refers to any entity that can be passed as an argument to functions, returned as a result from functions, and assigned to variables. This means that first-class objects can be manipulated in the same way as primitive data types, such as integers or strings. In programming languages that support this concept, first-class objects allow for greater flexibility and expressiveness in code, facilitating the creation of higher-order functions and enabling a more robust programming model. The main characteristics of first-class objects include their ability to be created, modified, and destroyed at runtime, as well as their capability to be used in complex data structures. This concept is essential in languages like JavaScript, Python, and Ruby, where objects are treated as first-class citizens, enabling developers to implement sophisticated design patterns and elegant solutions to complex problems.
