What are some examples of lazy evaluation in programming?
An example of an AI chatbot conversation about lazy evaluation in programming.
What are some examples of lazy evaluation in programming?
Lazy evaluation is a programming technique where expressions are not evaluated until their values are needed. For example, in Haskell, lists can be defined in a way that elements are computed only when accessed.
Can you give me a specific example using Haskell?
Sure! In Haskell, you can create an infinite list of Fibonacci numbers like this: fibs = 0 : 1 : zipWith (+) fibs (tail fibs). The numbers are generated only when you request them.
What are the benefits of using lazy evaluation?
Lazy evaluation can improve performance by avoiding unnecessary calculations and can help in working with infinite data structures.
Are there any downsides to lazy evaluation?
Yes, it can lead to increased memory usage since unevaluated expressions are stored in memory, and it may also complicate debugging.
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