What are lambda functions and how do they differ in various programming languages?

What are lambda functions and how do they differ in various programming languages?

Lambda functions are anonymous functions defined with the keyword 'lambda' in languages like Python, Java, and JavaScript. They allow you to create small, throwaway functions without formally defining them.

Can you give me examples of lambda functions in Python and Java?

Sure! In Python, a lambda function can be defined as lambda x: x + 1, which adds 1 to the input. In Java, you might use Function<Integer, Integer> addOne = x -> x + 1; to achieve the same.

Are there any limitations to using lambda functions?

Yes, lambda functions are typically limited to a single expression and cannot contain statements or annotations. This can restrict their complexity.

How do lambda functions compare in terms of performance across languages?

Performance can vary based on the language's implementation. Generally, lambda functions are optimized in languages like Java and C#, while in Python, they may be slower due to dynamic typing.