Description: The ‘Expression Body’ in Kotlin refers to a concise way to define a function using a single expression. This feature allows developers to write cleaner and more readable code, facilitating the creation of functions that return a value without the need to use the ‘return’ keyword. Instead of defining a complete code block, the expression body allows the function to be defined in a single line, which is especially useful for simple functions or those used as lambda expressions. This simplified syntax not only enhances code clarity but also reduces the number of lines needed, which can be beneficial in terms of code maintenance and understanding. Additionally, the use of expression bodies aligns with Kotlin’s functional programming paradigm, promoting immutability and declarative programming. In summary, the expression body is a powerful tool in Kotlin that enables developers to write functions more efficiently and elegantly.
Examples: An example of an expression body in Kotlin would be a function that calculates the square of a number: ‘fun square(x: Int) = x * x’. In this case, the ‘square’ function is defined in a single line, where the expression ‘x * x’ is the body of the function that is evaluated and returned automatically.
