What are some programming languages that support lazy evaluation?

What are some programming languages that support lazy evaluation?

Some programming languages that support lazy evaluation include Haskell, Scala, and Clojure. Would you like to know more about how they implement it?

Yes, how does Haskell handle lazy evaluation?

Haskell uses a technique called 'thunks' to delay computation until the value is needed. This allows for efficient memory usage and can lead to improved performance in certain scenarios.

Are there any downsides to using lazy evaluation?

Yes, while lazy evaluation can improve performance, it can also lead to increased memory usage if not managed properly, as thunks can accumulate.

Can you give an example of lazy evaluation in Scala?

Sure! In Scala, you can use the lazy keyword to define a lazy variable. For example, lazy val x = computeExpensiveValue() will only compute the value of x when it's first accessed.